189804810625 has 80 divisors (see below), whose sum is σ = 258453518400. Its totient is φ = 138862080000.

The previous prime is 189804810563. The next prime is 189804810649. The reversal of 189804810625 is 526018408981.

It is a happy number.

It is not a de Polignac number, because 189804810625 - 2⁷ = 189804810497 is a prime.

It is a super-2 number, since 2×189804810625² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 47224866 + ... + 47228884.

It is an arithmetic number, because the mean of its divisors is an integer number (3230668980).

Almost surely, 2^189804810625 is an apocalyptic number.

It is an amenable number.

189804810625 is a deficient number, since it is larger than the sum of its proper divisors (68648707775).

189804810625 is an equidigital number, since it uses as much as digits as its factorization.

189804810625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4196 (or 4181 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 52.

The spelling of 189804810625 in words is "one hundred eighty-nine billion, eight hundred four million, eight hundred ten thousand, six hundred twenty-five".