652184891 has 4 divisors (see below), whose sum is σ = 654411072. Its totient is φ = 649958712.

The previous prime is 652184843. The next prime is 652184893. The reversal of 652184891 is 198481256.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-652184891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (652184893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1112651 + ... + 1113236.

It is an arithmetic number, because the mean of its divisors is an integer number (163602768).

Almost surely, 2^652184891 is an apocalyptic number.

652184891 is a deficient number, since it is larger than the sum of its proper divisors (2226181).

652184891 is a wasteful number, since it uses less digits than its factorization.

652184891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226180.

The product of its digits is 138240, while the sum is 44.

The square root of 652184891 is about 25537.9108581732. The cubic root of 652184891 is about 867.2086034727.

The spelling of 652184891 in words is "six hundred fifty-two million, one hundred eighty-four thousand, eight hundred ninety-one".