38066981 has 2 divisors, whose sum is σ = 38066982. Its totient is φ = 38066980.

The previous prime is 38066947. The next prime is 38066993. The reversal of 38066981 is 18966083.

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., 27730756 + 10336225 = 5266^2 + 3215^2 .

It is a cyclic number.

It is not a de Polignac number, because 38066981 - 2¹⁰ = 38065957 is a prime.

It is a super-2 number, since 2×38066981² = 2898190084908722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38066881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19033490 + 19033491.

It is an arithmetic number, because the mean of its divisors is an integer number (19033491).

Almost surely, 2^38066981 is an apocalyptic number.

It is an amenable number.

38066981 is a deficient number, since it is larger than the sum of its proper divisors (1).

38066981 is an equidigital number, since it uses as much as digits as its factorization.

38066981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 38066981 is about 6169.8444875053. The cubic root of 38066981 is about 336.3949584817.

The spelling of 38066981 in words is "thirty-eight million, sixty-six thousand, nine hundred eighty-one".