38994619679 has 2 divisors, whose sum is σ = 38994619680. Its totient is φ = 38994619678.

The previous prime is 38994619649. The next prime is 38994619747. The reversal of 38994619679 is 97691649983.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38994619679 is a prime.

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 (38994619639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19497309839 + 19497309840.

It is an arithmetic number, because the mean of its divisors is an integer number (19497309840).

Almost surely, 2^38994619679 is an apocalyptic number.

38994619679 is a deficient number, since it is larger than the sum of its proper divisors (1).

38994619679 is an equidigital number, since it uses as much as digits as its factorization.

38994619679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158723712, while the sum is 71.

The spelling of 38994619679 in words is "thirty-eight billion, nine hundred ninety-four million, six hundred nineteen thousand, six hundred seventy-nine".