918873015940 has 24 divisors (see below), whose sum is σ = 2105054546112. Its totient is φ = 334135642080.

The previous prime is 918873015937. The next prime is 918873015953. The reversal of 918873015940 is 49510378819.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2088347544 + ... + 2088347983.

It is an arithmetic number, because the mean of its divisors is an integer number (87710606088).

Almost surely, 2^918873015940 is an apocalyptic number.

It is an amenable number.

918873015940 is an abundant number, since it is smaller than the sum of its proper divisors (1186181530172).

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

918873015940 is a wasteful number, since it uses less digits than its factorization.

918873015940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4176695547 (or 4176695545 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 55.

The spelling of 918873015940 in words is "nine hundred eighteen billion, eight hundred seventy-three million, fifteen thousand, nine hundred forty".