918989942 has 32 divisors (see below), whose sum is σ = 1529593632. Its totient is φ = 411346944.

The previous prime is 918989921. The next prime is 918989957. The reversal of 918989942 is 249989819.

It is a congruent number.

It is an unprimeable number.

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, 332438 + ... + 335190.

It is an arithmetic number, because the mean of its divisors is an integer number (47799801).

Almost surely, 2^918989942 is an apocalyptic number.

918989942 is a deficient number, since it is larger than the sum of its proper divisors (610603690).

918989942 is a wasteful number, since it uses less digits than its factorization.

918989942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3152.

The product of its digits is 3359232, while the sum is 59.

The square root of 918989942 is about 30314.8468905914. The cubic root of 918989942 is about 972.2327643147.

The spelling of 918989942 in words is "nine hundred eighteen million, nine hundred eighty-nine thousand, nine hundred forty-two".