38821611 has 4 divisors (see below), whose sum is σ = 51762152. Its totient is φ = 25881072.

The previous prime is 38821603. The next prime is 38821613. The reversal of 38821611 is 11612883.

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

It is not a de Polignac number, because 38821611 - 2³ = 38821603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38821613) 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, 6470266 + ... + 6470271.

It is an arithmetic number, because the mean of its divisors is an integer number (12940538).

Almost surely, 2^38821611 is an apocalyptic number.

38821611 is a deficient number, since it is larger than the sum of its proper divisors (12940541).

38821611 is a wasteful number, since it uses less digits than its factorization.

38821611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12940540.

The product of its digits is 2304, while the sum is 30.

The square root of 38821611 is about 6230.6990779526. The cubic root of 38821611 is about 338.6032985415.

The spelling of 38821611 in words is "thirty-eight million, eight hundred twenty-one thousand, six hundred eleven".