513984915 has 12 divisors (see below), whose sum is σ = 890907264. Its totient is φ = 274125264.

The previous prime is 513984901. The next prime is 513984943. The reversal of 513984915 is 519489315.

513984915 is a `hidden beast` number, since 513 + 98 + 49 + 1 + 5 = 666.

It is not a de Polignac number, because 513984915 - 2⁴ = 513984899 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 11421887 = 513984915 / (5 + 1 + 3 + 9 + 8 + 4 + 9 + 1 + 5).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5710899 + ... + 5710988.

It is an arithmetic number, because the mean of its divisors is an integer number (74242272).

Almost surely, 2^513984915 is an apocalyptic number.

513984915 is a deficient number, since it is larger than the sum of its proper divisors (376922349).

513984915 is a wasteful number, since it uses less digits than its factorization.

513984915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11421898 (or 11421895 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 513984915 is about 22671.2354096551. The cubic root of 513984915 is about 801.0324768121.

The spelling of 513984915 in words is "five hundred thirteen million, nine hundred eighty-four thousand, nine hundred fifteen".