3657448139 has 2 divisors, whose sum is σ = 3657448140. Its totient is φ = 3657448138.

The previous prime is 3657448133. The next prime is 3657448141. The reversal of 3657448139 is 9318447563.

3657448139 is digitally balanced in base 3, 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 (9318447563) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3657448139 - 2²⁴ = 3640670923 is a prime.

Together with 3657448141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3657448133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1828724069 + 1828724070.

It is an arithmetic number, because the mean of its divisors is an integer number (1828724070).

Almost surely, 2^3657448139 is an apocalyptic number.

3657448139 is a deficient number, since it is larger than the sum of its proper divisors (1).

3657448139 is an equidigital number, since it uses as much as digits as its factorization.

3657448139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 50.

The square root of 3657448139 is about 60476.8396909098. The cubic root of 3657448139 is about 1540.7282970834.

The spelling of 3657448139 in words is "three billion, six hundred fifty-seven million, four hundred forty-eight thousand, one hundred thirty-nine".