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18379496041 = 1355712
BaseRepresentation
bin10001000111100000…
…001101101001101001
31202102220021010201121
4101013200031221221
5300120122333131
612235440215241
71220314065364
oct210740155151
952386233647
1018379496041
117881823455
12368b30a521
13196ba4325a
14c64db50db
1572886b911
hex44780da69

18379496041 has 3 divisors (see below), whose sum is σ = 18379631613. Its totient is φ = 18379360470.

The previous prime is 18379496017. The next prime is 18379496117. The reversal of 18379496041 is 14069497381.

The square root of 18379496041 is 135571.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 18379496041 - 213 = 18379487849 is a prime.

It is a super-2 number, since 2×183794960412 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18379496041.

It is not an unprimeable number, because it can be changed into a prime (18379496341) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 67786 + ... + 203356.

It is an arithmetic number, because the mean of its divisors is an integer number (6126543871).

Almost surely, 218379496041 is an apocalyptic number.

18379496041 is the 135571-st square number.

18379496041 is the 67786-th centered octagonal number.

It is an amenable number.

18379496041 is a deficient number, since it is larger than the sum of its proper divisors (135572).

18379496041 is an frugal number, since it uses more digits than its factorization.

18379496041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271142 (or 135571 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 18379496041 in words is "eighteen billion, three hundred seventy-nine million, four hundred ninety-six thousand, forty-one".

Divisors: 1 135571 18379496041