118380381 has 8 divisors (see below), whose sum is σ = 180389184. Its totient is φ = 67645920.

The previous prime is 118380347. The next prime is 118380389. The reversal of 118380381 is 183083811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 118380381 - 2⁷ = 118380253 is a prime.

It is a super-2 number, since 2×118380381² = 28027829211410322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118380389) 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, 2818560 + ... + 2818601.

It is an arithmetic number, because the mean of its divisors is an integer number (22548648).

Almost surely, 2^118380381 is an apocalyptic number.

It is an amenable number.

118380381 is a deficient number, since it is larger than the sum of its proper divisors (62008803).

118380381 is an equidigital number, since it uses as much as digits as its factorization.

118380381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5637171.

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 118380381 is about 10880.2748586605. The cubic root of 118380381 is about 491.0132870141.

The spelling of 118380381 in words is "one hundred eighteen million, three hundred eighty thousand, three hundred eighty-one".