118972513 has 16 divisors (see below), whose sum is σ = 134576640. Its totient is φ = 104198400.

The previous prime is 118972417. The next prime is 118972517. The reversal of 118972513 is 315279811.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118972513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118972517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91081 + ... + 92377.

It is an arithmetic number, because the mean of its divisors is an integer number (8411040).

Almost surely, 2^118972513 is an apocalyptic number.

It is an amenable number.

118972513 is a deficient number, since it is larger than the sum of its proper divisors (15604127).

118972513 is a wasteful number, since it uses less digits than its factorization.

118972513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608.

The product of its digits is 15120, while the sum is 37.

The square root of 118972513 is about 10907.4521772960. The cubic root of 118972513 is about 491.8305994127.

The spelling of 118972513 in words is "one hundred eighteen million, nine hundred seventy-two thousand, five hundred thirteen".