118617645 has 16 divisors (see below), whose sum is σ = 190275840. Its totient is φ = 63100224.

The previous prime is 118617637. The next prime is 118617661. The reversal of 118617645 is 546716811.

It is not a de Polignac number, because 118617645 - 2³ = 118617637 is a prime.

It is a super-3 number, since 3×118617645³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4005 + ... + 15914.

It is an arithmetic number, because the mean of its divisors is an integer number (11892240).

Almost surely, 2^118617645 is an apocalyptic number.

118617645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

118617645 is a deficient number, since it is larger than the sum of its proper divisors (71658195).

118617645 is a wasteful number, since it uses less digits than its factorization.

118617645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20324.

The product of its digits is 40320, while the sum is 39.

The square root of 118617645 is about 10891.1728018611. The cubic root of 118617645 is about 491.3411060623.

The spelling of 118617645 in words is "one hundred eighteen million, six hundred seventeen thousand, six hundred forty-five".