192991156 has 6 divisors (see below), whose sum is σ = 337734530. Its totient is φ = 96495576.

The previous prime is 192991153. The next prime is 192991187. The reversal of 192991156 is 651199291.

192991156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 132618256 + 60372900 = 11516^2 + 7770^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (192991153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24123891 + ... + 24123898.

Almost surely, 2^192991156 is an apocalyptic number.

It is an amenable number.

192991156 is a deficient number, since it is larger than the sum of its proper divisors (144743374).

192991156 is a wasteful number, since it uses less digits than its factorization.

192991156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48247793 (or 48247791 counting only the distinct ones).

The product of its digits is 43740, while the sum is 43.

The square root of 192991156 is about 13892.1256832783. The cubic root of 192991156 is about 577.8908291877.

The spelling of 192991156 in words is "one hundred ninety-two million, nine hundred ninety-one thousand, one hundred fifty-six".