918907242 has 16 divisors (see below), whose sum is σ = 2004888672. Its totient is φ = 278456720.

The previous prime is 918907219. The next prime is 918907243. The reversal of 918907242 is 242709819.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 918907194 and 918907203.

It is not an unprimeable number, because it can be changed into a prime (918907243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6961353 + ... + 6961484.

It is an arithmetic number, because the mean of its divisors is an integer number (125305542).

Almost surely, 2^918907242 is an apocalyptic number.

918907242 is an abundant number, since it is smaller than the sum of its proper divisors (1085981430).

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

918907242 is a wasteful number, since it uses less digits than its factorization.

918907242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13922853.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 918907242 is about 30313.4828417983. The cubic root of 918907242 is about 972.2035996641.

The spelling of 918907242 in words is "nine hundred eighteen million, nine hundred seven thousand, two hundred forty-two".