168904953 has 64 divisors (see below), whose sum is σ = 298045440. Its totient is φ = 92534400.

The previous prime is 168904951. The next prime is 168904973. The reversal of 168904953 is 359409861.

It is a happy number.

It is not a de Polignac number, because 168904953 - 2¹ = 168904951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 168904899 and 168904908.

It is not an unprimeable number, because it can be changed into a prime (168904951) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 550026 + ... + 550332.

It is an arithmetic number, because the mean of its divisors is an integer number (4656960).

Almost surely, 2^168904953 is an apocalyptic number.

It is an amenable number.

168904953 is a deficient number, since it is larger than the sum of its proper divisors (129140487).

168904953 is a wasteful number, since it uses less digits than its factorization.

168904953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 168904953 is about 12996.3438320168. The cubic root of 168904953 is about 552.7738143059.

The spelling of 168904953 in words is "one hundred sixty-eight million, nine hundred four thousand, nine hundred fifty-three".