38278081 has 2 divisors, whose sum is σ = 38278082. Its totient is φ = 38278080.

The previous prime is 38278021. The next prime is 38278111. The reversal of 38278081 is 18087283.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38130625 + 147456 = 6175^2 + 384^2 .

It is a cyclic number.

It is not a de Polignac number, because 38278081 - 2¹⁷ = 38147009 is a prime.

It is a super-2 number, since 2×38278081² = 2930422970085122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38278081.

It is not a weakly prime, because it can be changed into another prime (38278021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19139040 + 19139041.

It is an arithmetic number, because the mean of its divisors is an integer number (19139041).

Almost surely, 2^38278081 is an apocalyptic number.

It is an amenable number.

38278081 is a deficient number, since it is larger than the sum of its proper divisors (1).

38278081 is an equidigital number, since it uses as much as digits as its factorization.

38278081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 38278081 is about 6186.9282362090. The cubic root of 38278081 is about 337.0156373446.

The spelling of 38278081 in words is "thirty-eight million, two hundred seventy-eight thousand, eighty-one".