38191136279 has 2 divisors, whose sum is σ = 38191136280. Its totient is φ = 38191136278.

The previous prime is 38191136239. The next prime is 38191136297. The reversal of 38191136279 is 97263119183.

Together with next prime (38191136297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (97263119183) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38191136279 is a prime.

It is a super-2 number, since 2×38191136279² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38191136239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19095568139 + 19095568140.

It is an arithmetic number, because the mean of its divisors is an integer number (19095568140).

Almost surely, 2^38191136279 is an apocalyptic number.

38191136279 is a deficient number, since it is larger than the sum of its proper divisors (1).

38191136279 is an equidigital number, since it uses as much as digits as its factorization.

38191136279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 50.

The spelling of 38191136279 in words is "thirty-eight billion, one hundred ninety-one million, one hundred thirty-six thousand, two hundred seventy-nine".