38281207109 has 4 divisors (see below), whose sum is σ = 38281711404. Its totient is φ = 38280702816.

The previous prime is 38281207079. The next prime is 38281207123. The reversal of 38281207109 is 90170218283.

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 22016030884 + 16265176225 = 148378^2 + 127535^2 .

It is a cyclic number.

It is not a de Polignac number, because 38281207109 - 2¹⁶ = 38281141573 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 (38281207409) 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, 112502 + ... + 298695.

It is an arithmetic number, because the mean of its divisors is an integer number (9570427851).

Almost surely, 2^38281207109 is an apocalyptic number.

It is an amenable number.

38281207109 is a deficient number, since it is larger than the sum of its proper divisors (504295).

38281207109 is an equidigital number, since it uses as much as digits as its factorization.

38281207109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504294.

The product of its (nonzero) digits is 48384, while the sum is 41.

The spelling of 38281207109 in words is "thirty-eight billion, two hundred eighty-one million, two hundred seven thousand, one hundred nine".