118601649 has 6 divisors (see below), whose sum is σ = 171313506. Its totient is φ = 79067760.

The previous prime is 118601627. The next prime is 118601653. The reversal of 118601649 is 946106811.

It is a happy number.

118601649 is a `hidden beast` number, since 1 + 1 + 8 + 6 + 0 + 1 + 649 = 666.

It can be written as a sum of positive squares in only one way, i.e., 105206049 + 13395600 = 10257^2 + 3660^2 .

It is not a de Polignac number, because 118601649 - 2⁸ = 118601393 is a prime.

It is a super-2 number, since 2×118601649² = 28132702291038402, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (118601669) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6588972 + ... + 6588989.

It is an arithmetic number, because the mean of its divisors is an integer number (28552251).

Almost surely, 2^118601649 is an apocalyptic number.

It is an amenable number.

118601649 is a deficient number, since it is larger than the sum of its proper divisors (52711857).

118601649 is a wasteful number, since it uses less digits than its factorization.

118601649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13177967 (or 13177964 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 118601649 is about 10890.4384209269. The cubic root of 118601649 is about 491.3190187198.

The spelling of 118601649 in words is "one hundred eighteen million, six hundred one thousand, six hundred forty-nine".