812385245189 has 4 divisors (see below), whose sum is σ = 928440280224. Its totient is φ = 696330210156.

The previous prime is 812385245153. The next prime is 812385245207. The reversal of 812385245189 is 981542583218.

812385245189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 812385245189 - 2³⁶ = 743665768453 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812385245689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58027517507 + ... + 58027517520.

It is an arithmetic number, because the mean of its divisors is an integer number (232110070056).

Almost surely, 2^812385245189 is an apocalyptic number.

It is an amenable number.

812385245189 is a deficient number, since it is larger than the sum of its proper divisors (116055035035).

812385245189 is a wasteful number, since it uses less digits than its factorization.

812385245189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116055035034.

The product of its digits is 5529600, while the sum is 56.

The spelling of 812385245189 in words is "eight hundred twelve billion, three hundred eighty-five million, two hundred forty-five thousand, one hundred eighty-nine".