38077431949 has 2 divisors, whose sum is σ = 38077431950. Its totient is φ = 38077431948.

The previous prime is 38077431919. The next prime is 38077431991. The reversal of 38077431949 is 94913477083.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20993112100 + 17084319849 = 144890^2 + 130707^2 .

It is an emirp because it is prime and its reverse (94913477083) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38077431949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38077431949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38077431919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19038715974 + 19038715975.

It is an arithmetic number, because the mean of its divisors is an integer number (19038715975).

Almost surely, 2^38077431949 is an apocalyptic number.

It is an amenable number.

38077431949 is a deficient number, since it is larger than the sum of its proper divisors (1).

38077431949 is an equidigital number, since it uses as much as digits as its factorization.

38077431949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4572288, while the sum is 55.

The spelling of 38077431949 in words is "thirty-eight billion, seventy-seven million, four hundred thirty-one thousand, nine hundred forty-nine".