2638961252 has 12 divisors (see below), whose sum is σ = 4629476460. Its totient is φ = 1316253696.

The previous prime is 2638961251. The next prime is 2638961279. The reversal of 2638961252 is 2521698362.

2638961252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1418576896 + 1220384356 = 37664^2 + 34934^2 .

It is not an unprimeable number, because it can be changed into a prime (2638961251) 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, 804893 + ... + 808164.

It is an arithmetic number, because the mean of its divisors is an integer number (385789705).

Almost surely, 2^2638961252 is an apocalyptic number.

It is an amenable number.

2638961252 is a deficient number, since it is larger than the sum of its proper divisors (1990515208).

2638961252 is a wasteful number, since it uses less digits than its factorization.

2638961252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613470 (or 1613468 counting only the distinct ones).

The product of its digits is 311040, while the sum is 44.

The square root of 2638961252 is about 51370.8210173830. The cubic root of 2638961252 is about 1381.9033548414.

The spelling of 2638961252 in words is "two billion, six hundred thirty-eight million, nine hundred sixty-one thousand, two hundred fifty-two".