168893090 has 32 divisors (see below), whose sum is σ = 326833920. Its totient is φ = 62636544.

The previous prime is 168893089. The next prime is 168893099. The reversal of 168893090 is 90398861.

It is not an unprimeable number, because it can be changed into a prime (168893099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 527 + ... + 18386.

It is an arithmetic number, because the mean of its divisors is an integer number (10213560).

Almost surely, 2^168893090 is an apocalyptic number.

168893090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168893090 is a deficient number, since it is larger than the sum of its proper divisors (157940830).

168893090 is a wasteful number, since it uses less digits than its factorization.

168893090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18986.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 168893090 is about 12995.8874264130. The cubic root of 168893090 is about 552.7608726895.

The spelling of 168893090 in words is "one hundred sixty-eight million, eight hundred ninety-three thousand, ninety".