2391890968 has 32 divisors (see below), whose sum is σ = 4513766400. Its totient is φ = 1188244512.

The previous prime is 2391890951. The next prime is 2391891017. The reversal of 2391890968 is 8690981932.

It is a super-2 number, since 2×2391890968² = 11442284805599954048, which contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 1044721 + ... + 1047007.

It is an arithmetic number, because the mean of its divisors is an integer number (141055200).

Almost surely, 2^2391890968 is an apocalyptic number.

It is an amenable number.

2391890968 is a deficient number, since it is larger than the sum of its proper divisors (2121875432).

2391890968 is a wasteful number, since it uses less digits than its factorization.

2391890968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3079 (or 3075 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 55.

The square root of 2391890968 is about 48906.9623673358. The cubic root of 2391890968 is about 1337.3562950155.

The spelling of 2391890968 in words is "two billion, three hundred ninety-one million, eight hundred ninety thousand, nine hundred sixty-eight".