38038891489 has 2 divisors, whose sum is σ = 38038891490. Its totient is φ = 38038891488.

The previous prime is 38038891463. The next prime is 38038891529. The reversal of 38038891489 is 98419883083.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37749381264 + 289510225 = 194292^2 + 17015^2 .

It is a cyclic number.

It is not a de Polignac number, because 38038891489 - 2⁹ = 38038890977 is a prime.

It is not a weakly prime, because it can be changed into another prime (38038891789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19019445744 + 19019445745.

It is an arithmetic number, because the mean of its divisors is an integer number (19019445745).

Almost surely, 2^38038891489 is an apocalyptic number.

It is an amenable number.

38038891489 is a deficient number, since it is larger than the sum of its proper divisors (1).

38038891489 is an equidigital number, since it uses as much as digits as its factorization.

38038891489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11943936, while the sum is 61.

The spelling of 38038891489 in words is "thirty-eight billion, thirty-eight million, eight hundred ninety-one thousand, four hundred eighty-nine".