118780915 has 16 divisors (see below), whose sum is σ = 159700320. Its totient is φ = 84049920.

The previous prime is 118780889. The next prime is 118780919. The reversal of 118780915 is 519087811.

It is a de Polignac number, because none of the positive numbers 2^k-118780915 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118780919) 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, 27150 + ... + 31219.

It is an arithmetic number, because the mean of its divisors is an integer number (9981270).

Almost surely, 2^118780915 is an apocalyptic number.

118780915 is a deficient number, since it is larger than the sum of its proper divisors (40919405).

118780915 is a wasteful number, since it uses less digits than its factorization.

118780915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58422.

The product of its (nonzero) digits is 20160, while the sum is 40.

The square root of 118780915 is about 10898.6657440257. The cubic root of 118780915 is about 491.5664364616.

The spelling of 118780915 in words is "one hundred eighteen million, seven hundred eighty thousand, nine hundred fifteen".