38229181 has 2 divisors, whose sum is σ = 38229182. Its totient is φ = 38229180.

The previous prime is 38229167. The next prime is 38229187. The reversal of 38229181 is 18192283.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32103556 + 6125625 = 5666^2 + 2475^2 .

It is an emirp because it is prime and its reverse (18192283) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38229181 - 2¹⁵ = 38196413 is a prime.

It is a super-2 number, since 2×38229181² = 2922940559861522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38229187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19114590 + 19114591.

It is an arithmetic number, because the mean of its divisors is an integer number (19114591).

Almost surely, 2^38229181 is an apocalyptic number.

It is an amenable number.

38229181 is a deficient number, since it is larger than the sum of its proper divisors (1).

38229181 is an equidigital number, since it uses as much as digits as its factorization.

38229181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 34.

The square root of 38229181 is about 6182.9750929468. The cubic root of 38229181 is about 336.8720644264.

The spelling of 38229181 in words is "thirty-eight million, two hundred twenty-nine thousand, one hundred eighty-one".