118472381 has 4 divisors (see below), whose sum is σ = 118527264. Its totient is φ = 118417500.

The previous prime is 118472377. The next prime is 118472407. The reversal of 118472381 is 183274811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 118472381 - 2² = 118472377 is a prime.

It is a super-2 number, since 2×118472381² = 28071410119618322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118472311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24065 + ... + 28566.

It is an arithmetic number, because the mean of its divisors is an integer number (29631816).

Almost surely, 2^118472381 is an apocalyptic number.

It is an amenable number.

118472381 is a deficient number, since it is larger than the sum of its proper divisors (54883).

118472381 is an equidigital number, since it uses as much as digits as its factorization.

118472381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54882.

The product of its digits is 10752, while the sum is 35.

The square root of 118472381 is about 10884.5018719278. The cubic root of 118472381 is about 491.1404520192.

The spelling of 118472381 in words is "one hundred eighteen million, four hundred seventy-two thousand, three hundred eighty-one".