38466881 has 2 divisors, whose sum is σ = 38466882. Its totient is φ = 38466880.

The previous prime is 38466871. The next prime is 38466889. The reversal of 38466881 is 18866483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36481600 + 1985281 = 6040^2 + 1409^2 .

It is a cyclic number.

It is not a de Polignac number, because 38466881 - 2¹⁰ = 38465857 is a prime.

It is a super-2 number, since 2×38466881² = 2959401867736322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38466889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19233440 + 19233441.

It is an arithmetic number, because the mean of its divisors is an integer number (19233441).

Almost surely, 2^38466881 is an apocalyptic number.

It is an amenable number.

38466881 is a deficient number, since it is larger than the sum of its proper divisors (1).

38466881 is an equidigital number, since it uses as much as digits as its factorization.

38466881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 221184, while the sum is 44.

The square root of 38466881 is about 6202.1674437248. The cubic root of 38466881 is about 337.5688192538.

The spelling of 38466881 in words is "thirty-eight million, four hundred sixty-six thousand, eight hundred eighty-one".