38763881 has 4 divisors (see below), whose sum is σ = 41745732. Its totient is φ = 35782032.

The previous prime is 38763871. The next prime is 38763883. The reversal of 38763881 is 18836783.

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 15531481 + 23232400 = 3941^2 + 4820^2 .

It is not a de Polignac number, because 38763881 - 2¹⁴ = 38747497 is a prime.

It is a super-2 number, since 2×38763881² = 3005276940364322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38763883) 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, 1490906 + ... + 1490931.

It is an arithmetic number, because the mean of its divisors is an integer number (10436433).

Almost surely, 2^38763881 is an apocalyptic number.

It is an amenable number.

38763881 is a deficient number, since it is larger than the sum of its proper divisors (2981851).

38763881 is a wasteful number, since it uses less digits than its factorization.

38763881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2981850.

The product of its digits is 193536, while the sum is 44.

The square root of 38763881 is about 6226.0646479136. The cubic root of 38763881 is about 338.4353743244.

The spelling of 38763881 in words is "thirty-eight million, seven hundred sixty-three thousand, eight hundred eighty-one".