38712161 has 4 divisors (see below), whose sum is σ = 39535872. Its totient is φ = 37888452.

The previous prime is 38712143. The next prime is 38712173. The reversal of 38712161 is 16121783.

38712161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38712161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38712181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411785 + ... + 411878.

It is an arithmetic number, because the mean of its divisors is an integer number (9883968).

Almost surely, 2^38712161 is an apocalyptic number.

It is an amenable number.

38712161 is a deficient number, since it is larger than the sum of its proper divisors (823711).

38712161 is an equidigital number, since it uses as much as digits as its factorization.

38712161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823710.

The product of its digits is 2016, while the sum is 29.

The square root of 38712161 is about 6221.9097550511. The cubic root of 38712161 is about 338.2847902616.

The spelling of 38712161 in words is "thirty-eight million, seven hundred twelve thousand, one hundred sixty-one".