2539646472 has 32 divisors (see below), whose sum is σ = 6926309280. Its totient is φ = 769589760.

The previous prime is 2539646471. The next prime is 2539646503. The reversal of 2539646472 is 2746469352.

It is not an unprimeable number, because it can be changed into a prime (2539646471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4809673 + ... + 4810200.

It is an arithmetic number, because the mean of its divisors is an integer number (216447165).

Almost surely, 2^2539646472 is an apocalyptic number.

2539646472 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2539646472 is an abundant number, since it is smaller than the sum of its proper divisors (4386662808).

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

2539646472 is a wasteful number, since it uses less digits than its factorization.

2539646472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9619893 (or 9619889 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 48.

The square root of 2539646472 is about 50394.9052186826. The cubic root of 2539646472 is about 1364.3456854106.

The spelling of 2539646472 in words is "two billion, five hundred thirty-nine million, six hundred forty-six thousand, four hundred seventy-two".