38850769649 has 2 divisors, whose sum is σ = 38850769650. Its totient is φ = 38850769648.

The previous prime is 38850769621. The next prime is 38850769651. The reversal of 38850769649 is 94696705883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26060290624 + 12790479025 = 161432^2 + 113095^2 .

It is a cyclic number.

It is not a de Polignac number, because 38850769649 - 2²⁴ = 38833992433 is a prime.

Together with 38850769651, 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 (38850769249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19425384824 + 19425384825.

It is an arithmetic number, because the mean of its divisors is an integer number (19425384825).

Almost surely, 2^38850769649 is an apocalyptic number.

It is an amenable number.

38850769649 is a deficient number, since it is larger than the sum of its proper divisors (1).

38850769649 is an equidigital number, since it uses as much as digits as its factorization.

38850769649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78382080, while the sum is 65.

The spelling of 38850769649 in words is "thirty-eight billion, eight hundred fifty million, seven hundred sixty-nine thousand, six hundred forty-nine".