118611861 has 8 divisors (see below), whose sum is σ = 158367840. Its totient is φ = 78965232.

The previous prime is 118611821. The next prime is 118611863. The reversal of 118611861 is 168116811.

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

It is not a de Polignac number, because 118611861 - 2⁷ = 118611733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118611863) 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, 24771 + ... + 29168.

It is an arithmetic number, because the mean of its divisors is an integer number (19795980).

Almost surely, 2^118611861 is an apocalyptic number.

It is an amenable number.

118611861 is a deficient number, since it is larger than the sum of its proper divisors (39755979).

118611861 is an equidigital number, since it uses as much as digits as its factorization.

118611861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54675.

The product of its digits is 2304, while the sum is 33.

The square root of 118611861 is about 10890.9072624828. The cubic root of 118611861 is about 491.3331197206. Note that the first 3 decimals are identical.

The spelling of 118611861 in words is "one hundred eighteen million, six hundred eleven thousand, eight hundred sixty-one".