1957338623 has 2 divisors, whose sum is σ = 1957338624. Its totient is φ = 1957338622.

The previous prime is 1957338587. The next prime is 1957338679. The reversal of 1957338623 is 3268337591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1957338623 - 2¹² = 1957334527 is a prime.

It is a super-2 number, since 2×1957338623² = 7662348970175072258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1957338683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978669311 + 978669312.

It is an arithmetic number, because the mean of its divisors is an integer number (978669312).

Almost surely, 2^1957338623 is an apocalyptic number.

1957338623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1957338623 is an equidigital number, since it uses as much as digits as its factorization.

1957338623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 47.

The square root of 1957338623 is about 44241.8198427687. The cubic root of 1957338623 is about 1250.8982605877.

The spelling of 1957338623 in words is "one billion, nine hundred fifty-seven million, three hundred thirty-eight thousand, six hundred twenty-three".