38328181 has 2 divisors, whose sum is σ = 38328182. Its totient is φ = 38328180.

The previous prime is 38328151. The next prime is 38328197. The reversal of 38328181 is 18182383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36108081 + 2220100 = 6009^2 + 1490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38328181 is a prime.

It is a super-2 number, since 2×38328181² = 2938098917537522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38328151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19164090 + 19164091.

It is an arithmetic number, because the mean of its divisors is an integer number (19164091).

Almost surely, 2^38328181 is an apocalyptic number.

It is an amenable number.

38328181 is a deficient number, since it is larger than the sum of its proper divisors (1).

38328181 is an equidigital number, since it uses as much as digits as its factorization.

38328181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 34.

The square root of 38328181 is about 6190.9757712335. The cubic root of 38328181 is about 337.1626067674.

The spelling of 38328181 in words is "thirty-eight million, three hundred twenty-eight thousand, one hundred eighty-one".