38138943959 has 2 divisors, whose sum is σ = 38138943960. Its totient is φ = 38138943958.

The previous prime is 38138943943. The next prime is 38138944073. The reversal of 38138943959 is 95934983183.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38138943959 - 2⁴ = 38138943943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38138943559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19069471979 + 19069471980.

It is an arithmetic number, because the mean of its divisors is an integer number (19069471980).

Almost surely, 2^38138943959 is an apocalyptic number.

38138943959 is a deficient number, since it is larger than the sum of its proper divisors (1).

38138943959 is an equidigital number, since it uses as much as digits as its factorization.

38138943959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25194240, while the sum is 62.

The spelling of 38138943959 in words is "thirty-eight billion, one hundred thirty-eight million, nine hundred forty-three thousand, nine hundred fifty-nine".