157944623 has 2 divisors, whose sum is σ = 157944624. Its totient is φ = 157944622.

The previous prime is 157944617. The next prime is 157944649. The reversal of 157944623 is 326449751.

157944623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157944623 - 2⁶ = 157944559 is a prime.

It is a super-2 number, since 2×157944623² = 49893007869224258, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157944653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78972311 + 78972312.

It is an arithmetic number, because the mean of its divisors is an integer number (78972312).

Almost surely, 2^157944623 is an apocalyptic number.

157944623 is a deficient number, since it is larger than the sum of its proper divisors (1).

157944623 is an equidigital number, since it uses as much as digits as its factorization.

157944623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 41.

The square root of 157944623 is about 12567.6021181449. The cubic root of 157944623 is about 540.5488509718.

The spelling of 157944623 in words is "one hundred fifty-seven million, nine hundred forty-four thousand, six hundred twenty-three".