2638016764 has 6 divisors (see below), whose sum is σ = 4616529344. Its totient is φ = 1319008380.

The previous prime is 2638016741. The next prime is 2638016767. The reversal of 2638016764 is 4676108362.

It is a self number, because there is not a number n which added to its sum of digits gives 2638016764.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638016767) by changing a digit.

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 as a sum of consecutive naturals, namely, 329752092 + ... + 329752099.

Almost surely, 2^2638016764 is an apocalyptic number.

It is an amenable number.

2638016764 is a deficient number, since it is larger than the sum of its proper divisors (1978512580).

2638016764 is a wasteful number, since it uses less digits than its factorization.

2638016764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659504195 (or 659504193 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 2638016764 is about 51361.6273496080. The cubic root of 2638016764 is about 1381.7384734414.

The spelling of 2638016764 in words is "two billion, six hundred thirty-eight million, sixteen thousand, seven hundred sixty-four".