38183220457 has 2 divisors, whose sum is σ = 38183220458. Its totient is φ = 38183220456.

The previous prime is 38183220421. The next prime is 38183220469. The reversal of 38183220457 is 75402238183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27252727056 + 10930493401 = 165084^2 + 104549^2 .

It is a cyclic number.

It is not a de Polignac number, because 38183220457 - 2⁷ = 38183220329 is a prime.

It is not a weakly prime, because it can be changed into another prime (38183220487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19091610228 + 19091610229.

It is an arithmetic number, because the mean of its divisors is an integer number (19091610229).

Almost surely, 2^38183220457 is an apocalyptic number.

It is an amenable number.

38183220457 is a deficient number, since it is larger than the sum of its proper divisors (1).

38183220457 is an equidigital number, since it uses as much as digits as its factorization.

38183220457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 38183220457 in words is "thirty-eight billion, one hundred eighty-three million, two hundred twenty thousand, four hundred fifty-seven".