2991993936 has 20 divisors (see below), whose sum is σ = 7729317792. Its totient is φ = 997331296.

The previous prime is 2991993919. The next prime is 2991994007. The reversal of 2991993936 is 6393991992.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2991993936.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 31166556 + ... + 31166651.

Almost surely, 2^2991993936 is an apocalyptic number.

It is an amenable number.

2991993936 is an abundant number, since it is smaller than the sum of its proper divisors (4737323856).

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

2991993936 is a wasteful number, since it uses less digits than its factorization.

2991993936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62333218 (or 62333212 counting only the distinct ones).

The product of its digits is 6377292, while the sum is 60.

The square root of 2991993936 is about 54699.1218942315. The cubic root of 2991993936 is about 1440.9654559551.

The spelling of 2991993936 in words is "two billion, nine hundred ninety-one million, nine hundred ninety-three thousand, nine hundred thirty-six".