2531650788 has 84 divisors (see below), whose sum is σ = 6768288828. Its totient is φ = 827910720.

The previous prime is 2531650697. The next prime is 2531650831. The reversal of 2531650788 is 8870561352.

2531650788 is a `hidden beast` number, since 2 + 53 + 16 + 507 + 88 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 609003684 + 1922647104 = 24678^2 + 43848^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 146358 + ... + 162738.

It is an arithmetic number, because the mean of its divisors is an integer number (80574867).

Almost surely, 2^2531650788 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2531650788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3384144414).

2531650788 is an abundant number, since it is smaller than the sum of its proper divisors (4236638040).

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

2531650788 is a wasteful number, since it uses less digits than its factorization.

2531650788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16456 (or 16439 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 2531650788 is about 50315.5123992591. The cubic root of 2531650788 is about 1362.9123697297.

The spelling of 2531650788 in words is "two billion, five hundred thirty-one million, six hundred fifty thousand, seven hundred eighty-eight".