918115870 has 32 divisors (see below), whose sum is σ = 1934767296. Its totient is φ = 307104000.

The previous prime is 918115867. The next prime is 918115879. The reversal of 918115870 is 78511819.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (918115879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157081 + ... + 162820.

It is an arithmetic number, because the mean of its divisors is an integer number (60461478).

Almost surely, 2^918115870 is an apocalyptic number.

918115870 is an abundant number, since it is smaller than the sum of its proper divisors (1016651426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

918115870 is a wasteful number, since it uses less digits than its factorization.

918115870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319956.

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

The square root of 918115870 is about 30300.4268946825. The cubic root of 918115870 is about 971.9244290572.

The spelling of 918115870 in words is "nine hundred eighteen million, one hundred fifteen thousand, eight hundred seventy".