156873923 has 2 divisors, whose sum is σ = 156873924. Its totient is φ = 156873922.

The previous prime is 156873917. The next prime is 156873947. The reversal of 156873923 is 329378651.

156873923 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 156873923 - 2⁶ = 156873859 is a prime.

It is not a weakly prime, because it can be changed into another prime (156873953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78436961 + 78436962.

It is an arithmetic number, because the mean of its divisors is an integer number (78436962).

Almost surely, 2^156873923 is an apocalyptic number.

156873923 is a deficient number, since it is larger than the sum of its proper divisors (1).

156873923 is an equidigital number, since it uses as much as digits as its factorization.

156873923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 44.

The square root of 156873923 is about 12524.9320557039. The cubic root of 156873923 is about 539.3246277792.

The spelling of 156873923 in words is "one hundred fifty-six million, eight hundred seventy-three thousand, nine hundred twenty-three".