918641409988 has 12 divisors (see below), whose sum is σ = 1608103383040. Its totient is φ = 459183300552.

The previous prime is 918641409979. The next prime is 918641409989. The reversal of 918641409988 is 889904146819.

It is not an unprimeable number, because it can be changed into a prime (918641409989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34336068 + ... + 34362811.

Almost surely, 2^918641409988 is an apocalyptic number.

It is an amenable number.

918641409988 is a deficient number, since it is larger than the sum of its proper divisors (689461973052).

918641409988 is a wasteful number, since it uses less digits than its factorization.

918641409988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68702226 (or 68702224 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 67.

The spelling of 918641409988 in words is "nine hundred eighteen billion, six hundred forty-one million, four hundred nine thousand, nine hundred eighty-eight".