168431844 has 48 divisors (see below), whose sum is σ = 461299328. Its totient is φ = 46821888.

The previous prime is 168431839. The next prime is 168431849. The reversal of 168431844 is 448134861.

It is an interprime number because it is at equal distance from previous prime (168431839) and next prime (168431849).

It is not an unprimeable number, because it can be changed into a prime (168431849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23989 + ... + 30204.

Almost surely, 2^168431844 is an apocalyptic number.

168431844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

168431844 is an abundant number, since it is smaller than the sum of its proper divisors (292867484).

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

168431844 is a wasteful number, since it uses less digits than its factorization.

168431844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54244 (or 54242 counting only the distinct ones).

The product of its digits is 73728, while the sum is 39.

The square root of 168431844 is about 12978.1294491926. The cubic root of 168431844 is about 552.2572183932.

The spelling of 168431844 in words is "one hundred sixty-eight million, four hundred thirty-one thousand, eight hundred forty-four".