168137418 has 16 divisors (see below), whose sum is σ = 347870880. Its totient is φ = 54113136.

The previous prime is 168137413. The next prime is 168137419. The reversal of 168137418 is 814731861.

It is not an unprimeable number, because it can be changed into a prime (168137413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482980 + ... + 483327.

It is an arithmetic number, because the mean of its divisors is an integer number (21741930).

Almost surely, 2^168137418 is an apocalyptic number.

168137418 is an abundant number, since it is smaller than the sum of its proper divisors (179733462).

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

168137418 is a wasteful number, since it uses less digits than its factorization.

168137418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966341.

The product of its digits is 32256, while the sum is 39.

The square root of 168137418 is about 12966.7813276850. The cubic root of 168137418 is about 551.9352410377.

The spelling of 168137418 in words is "one hundred sixty-eight million, one hundred thirty-seven thousand, four hundred eighteen".