168864129 has 32 divisors (see below), whose sum is σ = 295776000. Its totient is φ = 93163392.

The previous prime is 168864127. The next prime is 168864133. The reversal of 168864129 is 921468861.

It is not a de Polignac number, because 168864129 - 2¹ = 168864127 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168864127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9924 + ... + 20885.

It is an arithmetic number, because the mean of its divisors is an integer number (9243000).

Almost surely, 2^168864129 is an apocalyptic number.

It is an amenable number.

168864129 is a deficient number, since it is larger than the sum of its proper divisors (126911871).

168864129 is a wasteful number, since it uses less digits than its factorization.

168864129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30854 (or 30848 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 168864129 is about 12994.7731415366. The cubic root of 168864129 is about 552.7292759306.

The spelling of 168864129 in words is "one hundred sixty-eight million, eight hundred sixty-four thousand, one hundred twenty-nine".