118373781 has 16 divisors (see below), whose sum is σ = 166464000. Its totient is φ = 74616048.

The previous prime is 118373741. The next prime is 118373789. The reversal of 118373781 is 187373811.

It is not a de Polignac number, because 118373781 - 2²³ = 109985173 is a prime.

It is a super-2 number, since 2×118373781² = 28024704056471922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118373789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32410 + ... + 35876.

It is an arithmetic number, because the mean of its divisors is an integer number (10404000).

Almost surely, 2^118373781 is an apocalyptic number.

It is an amenable number.

118373781 is a deficient number, since it is larger than the sum of its proper divisors (48090219).

118373781 is a wasteful number, since it uses less digits than its factorization.

118373781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4088.

The product of its digits is 28224, while the sum is 39.

The square root of 118373781 is about 10879.9715532716. The cubic root of 118373781 is about 491.0041617748.

The spelling of 118373781 in words is "one hundred eighteen million, three hundred seventy-three thousand, seven hundred eighty-one".