38416561 has 8 divisors (see below), whose sum is σ = 39813480. Its totient is φ = 37024512.

The previous prime is 38416529. The next prime is 38416571. The reversal of 38416561 is 16561483.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 360000 + 38056561 = 600^2 + 6169^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38416561 - 2⁵ = 38416529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38416571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23961 + ... + 25513.

It is an arithmetic number, because the mean of its divisors is an integer number (4976685).

Almost surely, 2^38416561 is an apocalyptic number.

It is an amenable number.

38416561 is a deficient number, since it is larger than the sum of its proper divisors (1396919).

38416561 is a wasteful number, since it uses less digits than its factorization.

38416561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2435.

The product of its digits is 17280, while the sum is 34.

The square root of 38416561 is about 6198.1094698303. The cubic root of 38416561 is about 337.4215594569.

The spelling of 38416561 in words is "thirty-eight million, four hundred sixteen thousand, five hundred sixty-one".