2638989711 has 12 divisors (see below), whose sum is σ = 3849616680. Its totient is φ = 1741906800.

The previous prime is 2638989673. The next prime is 2638989733. The reversal of 2638989711 is 1179898362.

It is not a de Polignac number, because 2638989711 - 2¹⁰ = 2638988687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638989751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1450681 + ... + 1452498.

It is an arithmetic number, because the mean of its divisors is an integer number (320801390).

Almost surely, 2^2638989711 is an apocalyptic number.

2638989711 is a deficient number, since it is larger than the sum of its proper divisors (1210626969).

2638989711 is a wasteful number, since it uses less digits than its factorization.

2638989711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2903286 (or 2903283 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 2638989711 is about 51371.0980124038. The cubic root of 2638989711 is about 1381.9083223826.

The spelling of 2638989711 in words is "two billion, six hundred thirty-eight million, nine hundred eighty-nine thousand, seven hundred eleven".