168672394 has 16 divisors (see below), whose sum is σ = 281219040. Its totient is φ = 75222160.

The previous prime is 168672391. The next prime is 168672397. The reversal of 168672394 is 493276861.

It is an interprime number because it is at equal distance from previous prime (168672391) and next prime (168672397).

It is not an unprimeable number, because it can be changed into a prime (168672391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71164 + ... + 73495.

It is an arithmetic number, because the mean of its divisors is an integer number (17576190).

Almost surely, 2^168672394 is an apocalyptic number.

168672394 is a deficient number, since it is larger than the sum of its proper divisors (112546646).

168672394 is a wasteful number, since it uses less digits than its factorization.

168672394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144725.

The product of its digits is 435456, while the sum is 46.

The square root of 168672394 is about 12987.3936569275. The cubic root of 168672394 is about 552.5199998220.

The spelling of 168672394 in words is "one hundred sixty-eight million, six hundred seventy-two thousand, three hundred ninety-four".