189225953281 has 8 divisors (see below), whose sum is σ = 199198044800. Its totient is φ = 179255144880.

The previous prime is 189225953239. The next prime is 189225953291. The reversal of 189225953281 is 182359522981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189225953281 - 2¹³ = 189225945089 is a prime.

It is a super-2 number, since 2×189225953281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189225953291) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10350 + ... + 615271.

It is an arithmetic number, because the mean of its divisors is an integer number (24899755600).

Almost surely, 2^189225953281 is an apocalyptic number.

It is an amenable number.

189225953281 is a deficient number, since it is larger than the sum of its proper divisors (9972091519).

189225953281 is a wasteful number, since it uses less digits than its factorization.

189225953281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641559.

The product of its digits is 3110400, while the sum is 55.

The spelling of 189225953281 in words is "one hundred eighty-nine billion, two hundred twenty-five million, nine hundred fifty-three thousand, two hundred eighty-one".