113781866 has 16 divisors (see below), whose sum is σ = 187731648. Its totient is φ = 51717820.

The previous prime is 113781859. The next prime is 113781893. The reversal of 113781866 is 668187311.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18710 + ... + 24033.

It is an arithmetic number, because the mean of its divisors is an integer number (11733228).

Almost surely, 2^113781866 is an apocalyptic number.

113781866 is a deficient number, since it is larger than the sum of its proper divisors (73949782).

113781866 is an equidigital number, since it uses as much as digits as its factorization.

113781866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42778 (or 42756 counting only the distinct ones).

The product of its digits is 48384, while the sum is 41.

The square root of 113781866 is about 10666.8583003619. The cubic root of 113781866 is about 484.5712950968.

The spelling of 113781866 in words is "one hundred thirteen million, seven hundred eighty-one thousand, eight hundred sixty-six".