168338490 has 32 divisors (see below), whose sum is σ = 412611840. Its totient is φ = 43934784.

The previous prime is 168338483. The next prime is 168338491. The reversal of 168338490 is 94833861.

It is a happy number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (168338491) 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, 58285 + ... + 61104.

It is an arithmetic number, because the mean of its divisors is an integer number (12894120).

Almost surely, 2^168338490 is an apocalyptic number.

168338490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168338490 is an abundant number, since it is smaller than the sum of its proper divisors (244273350).

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

168338490 is a wasteful number, since it uses less digits than its factorization.

168338490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119446.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 168338490 is about 12974.5323615150. The cubic root of 168338490 is about 552.1551693052.

The spelling of 168338490 in words is "one hundred sixty-eight million, three hundred thirty-eight thousand, four hundred ninety".