168831642 has 32 divisors (see below), whose sum is σ = 398352384. Its totient is φ = 46681200.

The previous prime is 168831617. The next prime is 168831667. The reversal of 168831642 is 246138861.

168831642 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (168831617) and next prime (168831667).

It is a self number, because there is not a number n which added to its sum of digits gives 168831642.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63534 + ... + 66137.

It is an arithmetic number, because the mean of its divisors is an integer number (12448512).

Almost surely, 2^168831642 is an apocalyptic number.

168831642 is an abundant number, since it is smaller than the sum of its proper divisors (229520742).

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

168831642 is a wasteful number, since it uses less digits than its factorization.

168831642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129714.

The product of its digits is 55296, while the sum is 39.

The square root of 168831642 is about 12993.5230788266. The cubic root of 168831642 is about 552.6938279687.

The spelling of 168831642 in words is "one hundred sixty-eight million, eight hundred thirty-one thousand, six hundred forty-two".