38432881 has 2 divisors, whose sum is σ = 38432882. Its totient is φ = 38432880.

The previous prime is 38432851. The next prime is 38432909. The reversal of 38432881 is 18823483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36784225 + 1648656 = 6065^2 + 1284^2 .

It is a cyclic number.

It is not a de Polignac number, because 38432881 - 2¹³ = 38424689 is a prime.

It is a super-2 number, since 2×38432881² = 2954172683920322, 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 38432881.

It is not a weakly prime, because it can be changed into another prime (38432831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19216440 + 19216441.

It is an arithmetic number, because the mean of its divisors is an integer number (19216441).

Almost surely, 2^38432881 is an apocalyptic number.

It is an amenable number.

38432881 is a deficient number, since it is larger than the sum of its proper divisors (1).

38432881 is an equidigital number, since it uses as much as digits as its factorization.

38432881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36864, while the sum is 37.

The square root of 38432881 is about 6199.4258605132. The cubic root of 38432881 is about 337.4693334733.

It can be divided in two parts, 3843 and 2881, that added together give a square (6724 = 82²).

The spelling of 38432881 in words is "thirty-eight million, four hundred thirty-two thousand, eight hundred eighty-one".