167978902 has 24 divisors (see below), whose sum is σ = 311823216. Its totient is φ = 66452256.

The previous prime is 167978897. The next prime is 167978917. The reversal of 167978902 is 209879761.

It is a happy number.

167978902 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33133 + ... + 37864.

It is an arithmetic number, because the mean of its divisors is an integer number (12992634).

Almost surely, 2^167978902 is an apocalyptic number.

167978902 is a deficient number, since it is larger than the sum of its proper divisors (143844314).

167978902 is a wasteful number, since it uses less digits than its factorization.

167978902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71032 (or 71019 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 49.

The square root of 167978902 is about 12960.6674982425. The cubic root of 167978902 is about 551.7617359829.

The spelling of 167978902 in words is "one hundred sixty-seven million, nine hundred seventy-eight thousand, nine hundred two".