2391919968 has 24 divisors (see below), whose sum is σ = 6278790168. Its totient is φ = 797306624.

The previous prime is 2391919919. The next prime is 2391919969. The reversal of 2391919968 is 8699191932.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×2391919968² = 11442562266634242048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2391919969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12457821 + ... + 12458012.

It is an arithmetic number, because the mean of its divisors is an integer number (261616257).

Almost surely, 2^2391919968 is an apocalyptic number.

It is an amenable number.

2391919968 is an abundant number, since it is smaller than the sum of its proper divisors (3886870200).

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

2391919968 is a wasteful number, since it uses less digits than its factorization.

2391919968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24915846 (or 24915838 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 57.

The square root of 2391919968 is about 48907.2588477416. The cubic root of 2391919968 is about 1337.3616998293.

The spelling of 2391919968 in words is "two billion, three hundred ninety-one million, nine hundred nineteen thousand, nine hundred sixty-eight".