3656385377 has 2 divisors, whose sum is σ = 3656385378. Its totient is φ = 3656385376.

The previous prime is 3656385349. The next prime is 3656385379. The reversal of 3656385377 is 7735836563.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3304410256 + 351975121 = 57484^2 + 18761^2 .

It is a cyclic number.

It is not a de Polignac number, because 3656385377 - 2²⁶ = 3589276513 is a prime.

Together with 3656385379, 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 (3656385379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1828192688 + 1828192689.

It is an arithmetic number, because the mean of its divisors is an integer number (1828192689).

Almost surely, 2^3656385377 is an apocalyptic number.

It is an amenable number.

3656385377 is a deficient number, since it is larger than the sum of its proper divisors (1).

3656385377 is an equidigital number, since it uses as much as digits as its factorization.

3656385377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9525600, while the sum is 53.

The square root of 3656385377 is about 60468.0525318949. The cubic root of 3656385377 is about 1540.5790503911.

The spelling of 3656385377 in words is "three billion, six hundred fifty-six million, three hundred eighty-five thousand, three hundred seventy-seven".