8253185989 has 4 divisors (see below), whose sum is σ = 8256083680. Its totient is φ = 8250288300.

The previous prime is 8253185987. The next prime is 8253185999. The reversal of 8253185989 is 9895813528.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8253185989 - 2¹ = 8253185987 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 (8253185987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1444569 + ... + 1450270.

It is an arithmetic number, because the mean of its divisors is an integer number (2064020920).

Almost surely, 2^8253185989 is an apocalyptic number.

It is an amenable number.

8253185989 is a deficient number, since it is larger than the sum of its proper divisors (2897691).

8253185989 is a wasteful number, since it uses less digits than its factorization.

8253185989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2897690.

The product of its digits is 6220800, while the sum is 58.

The square root of 8253185989 is about 90847.0472222405. The cubic root of 8253185989 is about 2020.8800848405.

The spelling of 8253185989 in words is "eight billion, two hundred fifty-three million, one hundred eighty-five thousand, nine hundred eighty-nine".