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18090291741 = 39762165951
BaseRepresentation
bin10000110110010000…
…111111001000011101
31201200202002001000020
4100312100333020131
5244022103313431
612151025422353
71210202641224
oct206620771035
951622061006
1018090291741
117743552a35
12360a49a9b9
131923b55252
14c38811cbb
1570d291696
hex43643f21d

18090291741 has 8 divisors (see below), whose sum is σ = 24369053184. Its totient is φ = 11935862400.

The previous prime is 18090291733. The next prime is 18090291743. The reversal of 18090291741 is 14719209081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18090291741 - 23 = 18090291733 is a prime.

It is a super-2 number, since 2×180902917412 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18090291693 and 18090291702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18090291743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31082685 + ... + 31083266.

It is an arithmetic number, because the mean of its divisors is an integer number (3046131648).

Almost surely, 218090291741 is an apocalyptic number.

It is an amenable number.

18090291741 is a deficient number, since it is larger than the sum of its proper divisors (6278761443).

18090291741 is an equidigital number, since it uses as much as digits as its factorization.

18090291741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62166051.

The product of its (nonzero) digits is 36288, while the sum is 42.

The spelling of 18090291741 in words is "eighteen billion, ninety million, two hundred ninety-one thousand, seven hundred forty-one".

Divisors: 1 3 97 291 62165951 186497853 6030097247 18090291741