38370881 has 4 divisors (see below), whose sum is σ = 38592852. Its totient is φ = 38148912.

The previous prime is 38370841. The next prime is 38370889. The reversal of 38370881 is 18807383.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15484225 + 22886656 = 3935^2 + 4784^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38370881 is a prime.

It is a super-2 number, since 2×38370881² = 2944649017432322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38370889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110726 + ... + 111071.

It is an arithmetic number, because the mean of its divisors is an integer number (9648213).

Almost surely, 2^38370881 is an apocalyptic number.

It is an amenable number.

38370881 is a deficient number, since it is larger than the sum of its proper divisors (221971).

38370881 is a wasteful number, since it uses less digits than its factorization.

38370881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221970.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 38370881 is about 6194.4233791371. The cubic root of 38370881 is about 337.2877670708.

The spelling of 38370881 in words is "thirty-eight million, three hundred seventy thousand, eight hundred eighty-one".