118972515 has 8 divisors (see below), whose sum is σ = 190356048. Its totient is φ = 63452000.

The previous prime is 118972417. The next prime is 118972517. The reversal of 118972515 is 515279811.

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

It is not a de Polignac number, because 118972515 - 2¹⁹ = 118448227 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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3965736 + ... + 3965765.

It is an arithmetic number, because the mean of its divisors is an integer number (23794506).

Almost surely, 2^118972515 is an apocalyptic number.

118972515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

118972515 is a deficient number, since it is larger than the sum of its proper divisors (71383533).

118972515 is an equidigital number, since it uses as much as digits as its factorization.

118972515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7931509.

The product of its digits is 25200, while the sum is 39.

The square root of 118972515 is about 10907.4522689765. The cubic root of 118972515 is about 491.8306021687.

The spelling of 118972515 in words is "one hundred eighteen million, nine hundred seventy-two thousand, five hundred fifteen".