3638732879 has 2 divisors, whose sum is σ = 3638732880. Its totient is φ = 3638732878.

The previous prime is 3638732857. The next prime is 3638732893. The reversal of 3638732879 is 9782378363.

3638732879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (9782378363) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3638732879 - 2¹⁶ = 3638667343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3638731879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1819366439 + 1819366440.

It is an arithmetic number, because the mean of its divisors is an integer number (1819366440).

Almost surely, 2^3638732879 is an apocalyptic number.

3638732879 is a deficient number, since it is larger than the sum of its proper divisors (1).

3638732879 is an equidigital number, since it uses as much as digits as its factorization.

3638732879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9144576, while the sum is 56.

The square root of 3638732879 is about 60321.9104389110. The cubic root of 3638732879 is about 1538.0958191692.

The spelling of 3638732879 in words is "three billion, six hundred thirty-eight million, seven hundred thirty-two thousand, eight hundred seventy-nine".