38493910919 has 2 divisors, whose sum is σ = 38493910920. Its totient is φ = 38493910918.

The previous prime is 38493910913. The next prime is 38493910937. The reversal of 38493910919 is 91901939483.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38493910919 - 2²⁴ = 38477133703 is a prime.

It is a super-2 number, since 2×38493910919² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38493910913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19246955459 + 19246955460.

It is an arithmetic number, because the mean of its divisors is an integer number (19246955460).

Almost surely, 2^38493910919 is an apocalyptic number.

38493910919 is a deficient number, since it is larger than the sum of its proper divisors (1).

38493910919 is an equidigital number, since it uses as much as digits as its factorization.

38493910919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1889568, while the sum is 56.

The spelling of 38493910919 in words is "thirty-eight billion, four hundred ninety-three million, nine hundred ten thousand, nine hundred nineteen".