38753881 has 2 divisors, whose sum is σ = 38753882. Its totient is φ = 38753880.

The previous prime is 38753867. The next prime is 38753909. The reversal of 38753881 is 18835783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22278400 + 16475481 = 4720^2 + 4059^2 .

It is a cyclic number.

It is not a de Polignac number, because 38753881 - 2¹¹ = 38751833 is a prime.

It is a super-2 number, since 2×38753881² = 3003726585124322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38753681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19376940 + 19376941.

It is an arithmetic number, because the mean of its divisors is an integer number (19376941).

Almost surely, 2^38753881 is an apocalyptic number.

It is an amenable number.

38753881 is a deficient number, since it is larger than the sum of its proper divisors (1).

38753881 is an equidigital number, since it uses as much as digits as its factorization.

38753881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 43.

The square root of 38753881 is about 6225.2615206110. The cubic root of 38753881 is about 338.4062695262.

The spelling of 38753881 in words is "thirty-eight million, seven hundred fifty-three thousand, eight hundred eighty-one".