38966161237 has 2 divisors, whose sum is σ = 38966161238. Its totient is φ = 38966161236.

The previous prime is 38966161189. The next prime is 38966161307. The reversal of 38966161237 is 73216166983.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29039227281 + 9926933956 = 170409^2 + 99634^2 .

It is a cyclic number.

It is not a de Polignac number, because 38966161237 - 2¹¹ = 38966159189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38966141237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19483080618 + 19483080619.

It is an arithmetic number, because the mean of its divisors is an integer number (19483080619).

Almost surely, 2^38966161237 is an apocalyptic number.

It is an amenable number.

38966161237 is a deficient number, since it is larger than the sum of its proper divisors (1).

38966161237 is an equidigital number, since it uses as much as digits as its factorization.

38966161237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 52.

The spelling of 38966161237 in words is "thirty-eight billion, nine hundred sixty-six million, one hundred sixty-one thousand, two hundred thirty-seven".