1999516524 has 48 divisors (see below), whose sum is σ = 4691205120. Its totient is φ = 662852160.

The previous prime is 1999516517. The next prime is 1999516537. The reversal of 1999516524 is 4256159991.

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, 3109347 + ... + 3109989.

It is an arithmetic number, because the mean of its divisors is an integer number (97733440).

Almost surely, 2^1999516524 is an apocalyptic number.

It is an amenable number.

1999516524 is an abundant number, since it is smaller than the sum of its proper divisors (2691688596).

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

1999516524 is a wasteful number, since it uses less digits than its factorization.

1999516524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670 (or 1668 counting only the distinct ones).

The product of its digits is 874800, while the sum is 51.

The square root of 1999516524 is about 44715.9537972746. The cubic root of 1999516524 is about 1259.8195181148.

The spelling of 1999516524 in words is "one billion, nine hundred ninety-nine million, five hundred sixteen thousand, five hundred twenty-four".