918730840 has 32 divisors (see below), whose sum is σ = 2069718480. Its totient is φ = 367034752.

The previous prime is 918730823. The next prime is 918730843. The reversal of 918730840 is 48037819.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 918730793 and 918730802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (918730843) 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, 19194 + ... + 46966.

Almost surely, 2^918730840 is an apocalyptic number.

It is an amenable number.

918730840 is an abundant number, since it is smaller than the sum of its proper divisors (1150987640).

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

918730840 is a wasteful number, since it uses less digits than its factorization.

918730840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28611 (or 28607 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 918730840 is about 30310.5730727745. The cubic root of 918730840 is about 972.1413845943.

The spelling of 918730840 in words is "nine hundred eighteen million, seven hundred thirty thousand, eight hundred forty".