8461744581 has 8 divisors (see below), whose sum is σ = 11282755680. Its totient is φ = 5640948272.

The previous prime is 8461744567. The next prime is 8461744591. The reversal of 8461744581 is 1854471648.

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 8461744581 - 2⁷ = 8461744453 is a prime.

It is a super-2 number, since 2×8461744581² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8461744581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8461744591) 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, 106531 + ... + 168143.

It is an arithmetic number, because the mean of its divisors is an integer number (1410344460).

Almost surely, 2^8461744581 is an apocalyptic number.

It is an amenable number.

8461744581 is a deficient number, since it is larger than the sum of its proper divisors (2821011099).

8461744581 is a wasteful number, since it uses less digits than its factorization.

8461744581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107395.

The product of its digits is 860160, while the sum is 48.

The square root of 8461744581 is about 91987.7414713504. The cubic root of 8461744581 is about 2037.7612712541.

The spelling of 8461744581 in words is "eight billion, four hundred sixty-one million, seven hundred forty-four thousand, five hundred eighty-one".