180870381 has 8 divisors (see below), whose sum is σ = 267956160. Its totient is φ = 120580236.

The previous prime is 180870353. The next prime is 180870401. The reversal of 180870381 is 183078081.

It is not a de Polignac number, because 180870381 - 2⁶ = 180870317 is a prime.

It is a super-2 number, since 2×180870381² = 65428189446170322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180870301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3349425 + ... + 3349478.

It is an arithmetic number, because the mean of its divisors is an integer number (33494520).

Almost surely, 2^180870381 is an apocalyptic number.

It is an amenable number.

180870381 is a deficient number, since it is larger than the sum of its proper divisors (87085779).

180870381 is an equidigital number, since it uses as much as digits as its factorization.

180870381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6698912 (or 6698906 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 180870381 is about 13448.8059321265. The cubic root of 180870381 is about 565.5302209292.

The spelling of 180870381 in words is "one hundred eighty million, eight hundred seventy thousand, three hundred eighty-one".