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1958160493 = 4323745289
BaseRepresentation
bin111010010110111…
…0010100001101101
312001110121212012201
41310231302201231
513002242113433
6522150101501
766345042502
oct16455624155
95043555181
101958160493
1191536aa63
1246794a891
132528b8463
141480c74a9
15b6d9aa7d
hex74b7286d

1958160493 has 4 divisors (see below), whose sum is σ = 1958249020. Its totient is φ = 1958071968.

The previous prime is 1958160481. The next prime is 1958160527. The reversal of 1958160493 is 3940618591.

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 can be written as a sum of positive squares in 2 ways, for example, as 731269764 + 1226890729 = 27042^2 + 35027^2 .

It is a cyclic number.

It is not a de Polignac number, because 1958160493 - 25 = 1958160461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1958160433) 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 3 ways as a sum of consecutive naturals, for example, 20593 + ... + 65881.

It is an arithmetic number, because the mean of its divisors is an integer number (489562255).

Almost surely, 21958160493 is an apocalyptic number.

It is an amenable number.

1958160493 is a deficient number, since it is larger than the sum of its proper divisors (88527).

1958160493 is an equidigital number, since it uses as much as digits as its factorization.

1958160493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88526.

The product of its (nonzero) digits is 233280, while the sum is 46.

The square root of 1958160493 is about 44251.1072516835. The cubic root of 1958160493 is about 1251.0733166360.

The spelling of 1958160493 in words is "one billion, nine hundred fifty-eight million, one hundred sixty thousand, four hundred ninety-three".

Divisors: 1 43237 45289 1958160493