180378918 has 12 divisors (see below), whose sum is σ = 390821028. Its totient is φ = 60126300.

The previous prime is 180378907. The next prime is 180378923. The reversal of 180378918 is 819873081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5010508 + ... + 5010543.

It is an arithmetic number, because the mean of its divisors is an integer number (32568419).

Almost surely, 2^180378918 is an apocalyptic number.

180378918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

180378918 is an abundant number, since it is smaller than the sum of its proper divisors (210442110).

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

180378918 is a wasteful number, since it uses less digits than its factorization.

180378918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10021059 (or 10021056 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 45.

The square root of 180378918 is about 13430.5218811482. The cubic root of 180378918 is about 565.0175346322.

The spelling of 180378918 in words is "one hundred eighty million, three hundred seventy-eight thousand, nine hundred eighteen".