2638131140 has 24 divisors (see below), whose sum is σ = 5546002392. Its totient is φ = 1054123520.

The previous prime is 2638131113. The next prime is 2638131161. The reversal of 2638131140 is 411318362.

It can be written as a sum of positive squares in 4 ways, for example, as 130325056 + 2507806084 = 11416^2 + 50078^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51269 + ... + 88908.

It is an arithmetic number, because the mean of its divisors is an integer number (231083433).

Almost surely, 2^2638131140 is an apocalyptic number.

2638131140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2638131140 is an abundant number, since it is smaller than the sum of its proper divisors (2907871252).

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

2638131140 is a wasteful number, since it uses less digits than its factorization.

2638131140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141127 (or 141125 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 2638131140 is about 51362.7407757803. The cubic root of 2638131140 is about 1381.7584424118.

The spelling of 2638131140 in words is "two billion, six hundred thirty-eight million, one hundred thirty-one thousand, one hundred forty".