1518635940 has 48 divisors (see below), whose sum is σ = 4274245248. Its totient is φ = 402868224.

The previous prime is 1518635939. The next prime is 1518635947. The reversal of 1518635940 is 495368151.

It is a junction number, because it is equal to n+sod(n) for n = 1518635892 and 1518635901.

It is not an unprimeable number, because it can be changed into a prime (1518635947) 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, 53992 + ... + 77151.

It is an arithmetic number, because the mean of its divisors is an integer number (89046776).

Almost surely, 2^1518635940 is an apocalyptic number.

1518635940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1518635940 is an abundant number, since it is smaller than the sum of its proper divisors (2755609308).

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

1518635940 is a wasteful number, since it uses less digits than its factorization.

1518635940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131348 (or 131346 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 1518635940 is about 38969.6797523408. The cubic root of 1518635940 is about 1149.4353724777.

The spelling of 1518635940 in words is "one billion, five hundred eighteen million, six hundred thirty-five thousand, nine hundred forty".