38952181 has 2 divisors, whose sum is σ = 38952182. Its totient is φ = 38952180.

The previous prime is 38952167. The next prime is 38952187. The reversal of 38952181 is 18125983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34398225 + 4553956 = 5865^2 + 2134^2 .

It is an emirp because it is prime and its reverse (18125983) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38952181 is a prime.

It is a super-2 number, since 2×38952181² = 3034544809313522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38952181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38952187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19476090 + 19476091.

It is an arithmetic number, because the mean of its divisors is an integer number (19476091).

Almost surely, 2^38952181 is an apocalyptic number.

It is an amenable number.

38952181 is a deficient number, since it is larger than the sum of its proper divisors (1).

38952181 is an equidigital number, since it uses as much as digits as its factorization.

38952181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 37.

The square root of 38952181 is about 6241.1682400012. The cubic root of 38952181 is about 338.9824856149.

The spelling of 38952181 in words is "thirty-eight million, nine hundred fifty-two thousand, one hundred eighty-one".