180163400 has 24 divisors (see below), whose sum is σ = 418880370. Its totient is φ = 72065280.

The previous prime is 180163367. The next prime is 180163427. The reversal of 180163400 is 4361081.

It can be written as a sum of positive squares in 3 ways, for example, as 112232836 + 67930564 = 10594^2 + 8242^2 .

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 450209 + ... + 450608.

Almost surely, 2^180163400 is an apocalyptic number.

180163400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180163400 is an abundant number, since it is smaller than the sum of its proper divisors (238716970).

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

180163400 is a wasteful number, since it uses less digits than its factorization.

180163400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900833 (or 900824 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 180163400 is about 13422.4960420929. The cubic root of 180163400 is about 564.7924159757.

The spelling of 180163400 in words is "one hundred eighty million, one hundred sixty-three thousand, four hundred".