156196978 has 16 divisors (see below), whose sum is σ = 268115904. Its totient is φ = 66854160.

The previous prime is 156196949. The next prime is 156196981. The reversal of 156196978 is 879691651.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4476 + ... + 18232.

It is an arithmetic number, because the mean of its divisors is an integer number (16757244).

Almost surely, 2^156196978 is an apocalyptic number.

156196978 is a deficient number, since it is larger than the sum of its proper divisors (111918926).

156196978 is a wasteful number, since it uses less digits than its factorization.

156196978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14577.

The product of its digits is 816480, while the sum is 52.

The square root of 156196978 is about 12497.8789400442. The cubic root of 156196978 is about 538.5477416494.

The spelling of 156196978 in words is "one hundred fifty-six million, one hundred ninety-six thousand, nine hundred seventy-eight".