2531274816 has 56 divisors (see below), whose sum is σ = 7654096960. Its totient is φ = 723220992.

The previous prime is 2531274763. The next prime is 2531274833. The reversal of 2531274816 is 6184721352.

It is a tau number, because it is divible by the number of its divisors (56).

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, 940351 + ... + 943038.

Almost surely, 2^2531274816 is an apocalyptic number.

It is an amenable number.

2531274816 is an abundant number, since it is smaller than the sum of its proper divisors (5122822144).

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

2531274816 is a wasteful number, since it uses less digits than its factorization.

2531274816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883411 (or 1883401 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 2531274816 is about 50311.7761165316. The cubic root of 2531274816 is about 1362.8448983048.

It can be divided in two parts, 25312 and 74816, that added together give a triangular number (100128 = T₄₄₇).

The spelling of 2531274816 in words is "two billion, five hundred thirty-one million, two hundred seventy-four thousand, eight hundred sixteen".