38356861 has 4 divisors (see below), whose sum is σ = 38985724. Its totient is φ = 37728000.

The previous prime is 38356823. The next prime is 38356867. The reversal of 38356861 is 16865383.

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 534361 + 37822500 = 731^2 + 6150^2 .

It is a cyclic number.

It is not a de Polignac number, because 38356861 - 2¹⁵ = 38324093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38356867) 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, 314340 + ... + 314461.

It is an arithmetic number, because the mean of its divisors is an integer number (9746431).

Almost surely, 2^38356861 is an apocalyptic number.

It is an amenable number.

38356861 is a deficient number, since it is larger than the sum of its proper divisors (628863).

38356861 is an equidigital number, since it uses as much as digits as its factorization.

38356861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628862.

The product of its digits is 103680, while the sum is 40.

The square root of 38356861 is about 6193.2916127048. The cubic root of 38356861 is about 337.2466825259.

The spelling of 38356861 in words is "thirty-eight million, three hundred fifty-six thousand, eight hundred sixty-one".