8251020189 has 12 divisors (see below), whose sum is σ = 11919093472. Its totient is φ = 5500240200.

The previous prime is 8251020181. The next prime is 8251020191. The reversal of 8251020189 is 9810201528.

It is not a de Polignac number, because 8251020189 - 2³ = 8251020181 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 (8251020181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115254 + ... + 172584.

Almost surely, 2^8251020189 is an apocalyptic number.

It is an amenable number.

8251020189 is a deficient number, since it is larger than the sum of its proper divisors (3668073283).

8251020189 is a wasteful number, since it uses less digits than its factorization.

8251020189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73328 (or 73325 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 8251020189 is about 90835.1264049321. The cubic root of 8251020189 is about 2020.7032963451.

The spelling of 8251020189 in words is "eight billion, two hundred fifty-one million, twenty thousand, one hundred eighty-nine".