38129654779 has 2 divisors, whose sum is σ = 38129654780. Its totient is φ = 38129654778.

The previous prime is 38129654767. The next prime is 38129654789. The reversal of 38129654779 is 97745692183.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38129654779 - 2⁵ = 38129654747 is a prime.

It is not a weakly prime, because it can be changed into another prime (38129654789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19064827389 + 19064827390.

It is an arithmetic number, because the mean of its divisors is an integer number (19064827390).

Almost surely, 2^38129654779 is an apocalyptic number.

38129654779 is a deficient number, since it is larger than the sum of its proper divisors (1).

38129654779 is an equidigital number, since it uses as much as digits as its factorization.

38129654779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22861440, while the sum is 61.

The spelling of 38129654779 in words is "thirty-eight billion, one hundred twenty-nine million, six hundred fifty-four thousand, seven hundred seventy-nine".