38013690881 has 2 divisors, whose sum is σ = 38013690882. Its totient is φ = 38013690880.

The previous prime is 38013690853. The next prime is 38013690893. The reversal of 38013690881 is 18809631083.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38003553025 + 10137856 = 194945^2 + 3184^2 .

It is a cyclic number.

It is not a de Polignac number, because 38013690881 - 2¹⁴ = 38013674497 is a prime.

It is a super-2 number, since 2×38013690881² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38013690181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19006845440 + 19006845441.

It is an arithmetic number, because the mean of its divisors is an integer number (19006845441).

Almost surely, 2^38013690881 is an apocalyptic number.

It is an amenable number.

38013690881 is a deficient number, since it is larger than the sum of its proper divisors (1).

38013690881 is an equidigital number, since it uses as much as digits as its factorization.

38013690881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 47.

The spelling of 38013690881 in words is "thirty-eight billion, thirteen million, six hundred ninety thousand, eight hundred eighty-one".