168478902 has 48 divisors (see below), whose sum is σ = 377142480. Its totient is φ = 54323136.

The previous prime is 168478873. The next prime is 168478907. The reversal of 168478902 is 209874861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168478907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83368 + ... + 85364.

It is an arithmetic number, because the mean of its divisors is an integer number (7857135).

Almost surely, 2^168478902 is an apocalyptic number.

168478902 is an abundant number, since it is smaller than the sum of its proper divisors (208663578).

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

168478902 is a wasteful number, since it uses less digits than its factorization.

168478902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157 (or 2154 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 168478902 is about 12979.9422957115. The cubic root of 168478902 is about 552.3086451300.

The spelling of 168478902 in words is "one hundred sixty-eight million, four hundred seventy-eight thousand, nine hundred two".