168164392830 has 128 divisors (see below), whose sum is σ = 474076219392. Its totient is φ = 37370377728.

The previous prime is 168164392789. The next prime is 168164392841. The reversal of 168164392830 is 38293461861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11235712 + ... + 11250668.

It is an arithmetic number, because the mean of its divisors is an integer number (3703720464).

Almost surely, 2^168164392830 is an apocalyptic number.

168164392830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 168164392830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237038109696).

168164392830 is an abundant number, since it is smaller than the sum of its proper divisors (305911826562).

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

168164392830 is a wasteful number, since it uses less digits than its factorization.

168164392830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16458.

The product of its (nonzero) digits is 1492992, while the sum is 51.

The spelling of 168164392830 in words is "one hundred sixty-eight billion, one hundred sixty-four million, three hundred ninety-two thousand, eight hundred thirty".