8619451672 has 32 divisors (see below), whose sum is σ = 17413739280. Its totient is φ = 3976133760.

The previous prime is 8619451667. The next prime is 8619451679. The reversal of 8619451672 is 2761549168.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8619451679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188538 + ... + 229750.

Almost surely, 2^8619451672 is an apocalyptic number.

It is an amenable number.

8619451672 is an abundant number, since it is smaller than the sum of its proper divisors (8794287608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8619451672 is a wasteful number, since it uses less digits than its factorization.

8619451672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43243 (or 43239 counting only the distinct ones).

The product of its digits is 725760, while the sum is 49.

The square root of 8619451672 is about 92841.0021057507. The cubic root of 8619451672 is about 2050.3431249567.

The spelling of 8619451672 in words is "eight billion, six hundred nineteen million, four hundred fifty-one thousand, six hundred seventy-two".