38506846393 has 2 divisors, whose sum is σ = 38506846394. Its totient is φ = 38506846392.

The previous prime is 38506846373. The next prime is 38506846507. The reversal of 38506846393 is 39364860583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25925186169 + 12581660224 = 161013^2 + 112168^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38506846393 is a prime.

It is a super-2 number, since 2×38506846393² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38506846333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19253423196 + 19253423197.

It is an arithmetic number, because the mean of its divisors is an integer number (19253423197).

Almost surely, 2^38506846393 is an apocalyptic number.

It is an amenable number.

38506846393 is a deficient number, since it is larger than the sum of its proper divisors (1).

38506846393 is an equidigital number, since it uses as much as digits as its factorization.

38506846393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11197440, while the sum is 55.

The spelling of 38506846393 in words is "thirty-eight billion, five hundred six million, eight hundred forty-six thousand, three hundred ninety-three".