1985313996 has 24 divisors (see below), whose sum is σ = 5147110640. Its totient is φ = 661771296.

The previous prime is 1985313989. The next prime is 1985314021. The reversal of 1985313996 is 6993135891.

1985313996 is a `hidden beast` number, since 19 + 8 + 531 + 3 + 9 + 96 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9191161 + ... + 9191376.

Almost surely, 2^1985313996 is an apocalyptic number.

It is an amenable number.

1985313996 is an abundant number, since it is smaller than the sum of its proper divisors (3161796644).

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

1985313996 is a wasteful number, since it uses less digits than its factorization.

1985313996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18382550 (or 18382542 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 54.

The square root of 1985313996 is about 44556.8625017516. The cubic root of 1985313996 is about 1256.8296030721.

The spelling of 1985313996 in words is "one billion, nine hundred eighty-five million, three hundred thirteen thousand, nine hundred ninety-six".