8744791861 has 16 divisors (see below), whose sum is σ = 9459294768. Its totient is φ = 8036352000.

The previous prime is 8744791831. The next prime is 8744791877. The reversal of 8744791861 is 1681974478.

It can be written as a sum of positive squares in 8 ways, for example, as 3594002500 + 5150789361 = 59950^2 + 71769^2 .

It is a cyclic number.

It is not a de Polignac number, because 8744791861 - 2⁷ = 8744791733 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 (8744791831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3340225 + ... + 3342841.

It is an arithmetic number, because the mean of its divisors is an integer number (591205923).

Almost surely, 2^8744791861 is an apocalyptic number.

It is an amenable number.

8744791861 is a deficient number, since it is larger than the sum of its proper divisors (714502907).

8744791861 is a wasteful number, since it uses less digits than its factorization.

8744791861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3672.

The product of its digits is 2709504, while the sum is 55.

The square root of 8744791861 is about 93513.5918516661. The cubic root of 8744791861 is about 2060.2337263476.

The spelling of 8744791861 in words is "eight billion, seven hundred forty-four million, seven hundred ninety-one thousand, eight hundred sixty-one".