918373440 has 112 divisors (see below), whose sum is σ = 3042684288. Its totient is φ = 234246144.

The previous prime is 918373433. The next prime is 918373447. The reversal of 918373440 is 44373819.

It is an interprime number because it is at equal distance from previous prime (918373433) and next prime (918373447).

It is not an unprimeable number, because it can be changed into a prime (918373447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1284 + ... + 42876.

It is an arithmetic number, because the mean of its divisors is an integer number (27166824).

Almost surely, 2^918373440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 918373440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1521342144).

918373440 is an abundant number, since it is smaller than the sum of its proper divisors (2124310848).

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

918373440 is a wasteful number, since it uses less digits than its factorization.

918373440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41636 (or 41626 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 918373440 is about 30304.6768667808. The cubic root of 918373440 is about 972.0153090783.

The spelling of 918373440 in words is "nine hundred eighteen million, three hundred seventy-three thousand, four hundred forty".