2639763189 has 24 divisors (see below), whose sum is σ = 4519103680. Its totient is φ = 1508435136.

The previous prime is 2639763167. The next prime is 2639763211. The reversal of 2639763189 is 9813679362.

It is an interprime number because it is at equal distance from previous prime (2639763167) and next prime (2639763211).

It is not a de Polignac number, because 2639763189 - 2¹¹ = 2639761141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2639763089) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 774244 + ... + 777645.

Almost surely, 2^2639763189 is an apocalyptic number.

It is an amenable number.

2639763189 is a deficient number, since it is larger than the sum of its proper divisors (1879340491).

2639763189 is an equidigital number, since it uses as much as digits as its factorization.

2639763189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551911 (or 1551899 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 2639763189 is about 51378.6257990616. The cubic root of 2639763189 is about 1382.0433199121.

The spelling of 2639763189 in words is "two billion, six hundred thirty-nine million, seven hundred sixty-three thousand, one hundred eighty-nine".