156917982 has 16 divisors (see below), whose sum is σ = 337977360. Its totient is φ = 48282432.

The previous prime is 156917963. The next prime is 156918053. The reversal of 156917982 is 289719651.

156917982 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1005807 + ... + 1005962.

It is an arithmetic number, because the mean of its divisors is an integer number (21123585).

Almost surely, 2^156917982 is an apocalyptic number.

156917982 is an abundant number, since it is smaller than the sum of its proper divisors (181059378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

156917982 is a wasteful number, since it uses less digits than its factorization.

156917982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011787.

The product of its digits is 272160, while the sum is 48.

The square root of 156917982 is about 12526.6907840818. The cubic root of 156917982 is about 539.3751139257.

The spelling of 156917982 in words is "one hundred fifty-six million, nine hundred seventeen thousand, nine hundred eighty-two".