38102434021 has 2 divisors, whose sum is σ = 38102434022. Its totient is φ = 38102434020.

The previous prime is 38102434009. The next prime is 38102434043. The reversal of 38102434021 is 12043420183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19866902500 + 18235531521 = 140950^2 + 135039^2 .

It is a cyclic number.

It is not a de Polignac number, because 38102434021 - 2⁷ = 38102433893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38102434001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19051217010 + 19051217011.

It is an arithmetic number, because the mean of its divisors is an integer number (19051217011).

Almost surely, 2^38102434021 is an apocalyptic number.

It is an amenable number.

38102434021 is a deficient number, since it is larger than the sum of its proper divisors (1).

38102434021 is an equidigital number, since it uses as much as digits as its factorization.

38102434021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

The spelling of 38102434021 in words is "thirty-eight billion, one hundred two million, four hundred thirty-four thousand, twenty-one".