38520990839 has 2 divisors, whose sum is σ = 38520990840. Its totient is φ = 38520990838.

The previous prime is 38520990793. The next prime is 38520990869. The reversal of 38520990839 is 93809902583.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38520990839 - 2³² = 34226023543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38520990869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19260495419 + 19260495420.

It is an arithmetic number, because the mean of its divisors is an integer number (19260495420).

Almost surely, 2^38520990839 is an apocalyptic number.

38520990839 is a deficient number, since it is larger than the sum of its proper divisors (1).

38520990839 is an equidigital number, since it uses as much as digits as its factorization.

38520990839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4199040, while the sum is 56.

The spelling of 38520990839 in words is "thirty-eight billion, five hundred twenty million, nine hundred ninety thousand, eight hundred thirty-nine".