2391904144 has 20 divisors (see below), whose sum is σ = 5296359424. Its totient is φ = 1025101728.

The previous prime is 2391904133. The next prime is 2391904171. The reversal of 2391904144 is 4414091932.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10678032 + ... + 10678255.

Almost surely, 2^2391904144 is an apocalyptic number.

It is an amenable number.

2391904144 is an abundant number, since it is smaller than the sum of its proper divisors (2904455280).

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

2391904144 is a wasteful number, since it uses less digits than its factorization.

2391904144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21356302 (or 21356296 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 2391904144 is about 48907.0970718974. The cubic root of 2391904144 is about 1337.3587506701.

The spelling of 2391904144 in words is "two billion, three hundred ninety-one million, nine hundred four thousand, one hundred forty-four".