38780759489 has 2 divisors, whose sum is σ = 38780759490. Its totient is φ = 38780759488.

The previous prime is 38780759477. The next prime is 38780759527. The reversal of 38780759489 is 98495708783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37102464400 + 1678295089 = 192620^2 + 40967^2 .

It is a cyclic number.

It is not a de Polignac number, because 38780759489 - 2⁸ = 38780759233 is a prime.

It is a super-2 number, since 2×38780759489² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38780759429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19390379744 + 19390379745.

It is an arithmetic number, because the mean of its divisors is an integer number (19390379745).

Almost surely, 2^38780759489 is an apocalyptic number.

It is an amenable number.

38780759489 is a deficient number, since it is larger than the sum of its proper divisors (1).

38780759489 is an equidigital number, since it uses as much as digits as its factorization.

38780759489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 121927680, while the sum is 68.

The spelling of 38780759489 in words is "thirty-eight billion, seven hundred eighty million, seven hundred fifty-nine thousand, four hundred eighty-nine".