118045881 has 12 divisors (see below), whose sum is σ = 170656980. Its totient is φ = 78629760.

The previous prime is 118045877. The next prime is 118045883. The reversal of 118045881 is 188540811.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 70560000 + 47485881 = 8400^2 + 6891^2 .

It is not a de Polignac number, because 118045881 - 2² = 118045877 is a prime.

It is a super-2 number, since 2×118045881² = 27869660042132322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (118045883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6925 + ... + 16853.

It is an arithmetic number, because the mean of its divisors is an integer number (14221415).

Almost surely, 2^118045881 is an apocalyptic number.

It is an amenable number.

118045881 is a deficient number, since it is larger than the sum of its proper divisors (52611099).

118045881 is a wasteful number, since it uses less digits than its factorization.

118045881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11256 (or 11253 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 36.

The square root of 118045881 is about 10864.8921301594. The cubic root of 118045881 is about 490.5503756084.

The spelling of 118045881 in words is "one hundred eighteen million, forty-five thousand, eight hundred eighty-one".