168663130 has 16 divisors (see below), whose sum is σ = 314062920. Its totient is φ = 65138752.

The previous prime is 168663113. The next prime is 168663139. The reversal of 168663130 is 31366861.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 88040689 + 80622441 = 9383^2 + 8979^2 .

It is not an unprimeable number, because it can be changed into a prime (168663139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290509 + ... + 291088.

Almost surely, 2^168663130 is an apocalyptic number.

168663130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168663130 is a deficient number, since it is larger than the sum of its proper divisors (145399790).

168663130 is a wasteful number, since it uses less digits than its factorization.

168663130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581633.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 168663130 is about 12987.0369984843. The cubic root of 168663130 is about 552.5098842782.

The spelling of 168663130 in words is "one hundred sixty-eight million, six hundred sixty-three thousand, one hundred thirty".