518351940 has 48 divisors (see below), whose sum is σ = 1612652160. Its totient is φ = 138227040.

The previous prime is 518351927. The next prime is 518351957. The reversal of 518351940 is 49153815.

518351940 is a `hidden beast` number, since 518 + 3 + 51 + 94 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 518351895 and 518351904.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 479416 + ... + 480495.

It is an arithmetic number, because the mean of its divisors is an integer number (33596920).

Almost surely, 2^518351940 is an apocalyptic number.

It is an amenable number.

518351940 is an abundant number, since it is smaller than the sum of its proper divisors (1094300220).

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

518351940 is a wasteful number, since it uses less digits than its factorization.

518351940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959929 (or 959921 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 518351940 is about 22767.3437185808. The cubic root of 518351940 is about 803.2947145262.

The spelling of 518351940 in words is "five hundred eighteen million, three hundred fifty-one thousand, nine hundred forty".