38694754181 has 2 divisors, whose sum is σ = 38694754182. Its totient is φ = 38694754180.

The previous prime is 38694754141. The next prime is 38694754183. The reversal of 38694754181 is 18145749683.

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., 20155480900 + 18539273281 = 141970^2 + 136159^2 .

It is a cyclic number.

It is not a de Polignac number, because 38694754181 - 2³⁴ = 21514884997 is a prime.

It is a super-2 number, since 2×38694754181² (a number of 22 digits) contains 22 as substring.

Together with 38694754183, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38694754183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19347377090 + 19347377091.

It is an arithmetic number, because the mean of its divisors is an integer number (19347377091).

Almost surely, 2^38694754181 is an apocalyptic number.

It is an amenable number.

38694754181 is a deficient number, since it is larger than the sum of its proper divisors (1).

38694754181 is an equidigital number, since it uses as much as digits as its factorization.

38694754181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5806080, while the sum is 56.

The spelling of 38694754181 in words is "thirty-eight billion, six hundred ninety-four million, seven hundred fifty-four thousand, one hundred eighty-one".