189503385131 has 4 divisors (see below), whose sum is σ = 192609998064. Its totient is φ = 186396772200.

The previous prime is 189503385047. The next prime is 189503385139. The reversal of 189503385131 is 131583305981.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189503385131 is a prime.

It is a super-2 number, since 2×189503385131² (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 (189503385139) 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, 1553306375 + ... + 1553306496.

It is an arithmetic number, because the mean of its divisors is an integer number (48152499516).

Almost surely, 2^189503385131 is an apocalyptic number.

189503385131 is a deficient number, since it is larger than the sum of its proper divisors (3106612933).

189503385131 is an equidigital number, since it uses as much as digits as its factorization.

189503385131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3106612932.

The product of its (nonzero) digits is 388800, while the sum is 47.

The spelling of 189503385131 in words is "one hundred eighty-nine billion, five hundred three million, three hundred eighty-five thousand, one hundred thirty-one".