189502184690 has 64 divisors (see below), whose sum is σ = 424148465664. Its totient is φ = 59355998208.

The previous prime is 189502184687. The next prime is 189502184699. The reversal of 189502184690 is 96481205981.

It is a super-2 number, since 2×189502184690² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (189502184699) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 985154 + ... + 1161693.

It is an arithmetic number, because the mean of its divisors is an integer number (6627319776).

Almost surely, 2^189502184690 is an apocalyptic number.

189502184690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189502184690 is an abundant number, since it is smaller than the sum of its proper divisors (234646280974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189502184690 is a wasteful number, since it uses less digits than its factorization.

189502184690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146971.

The product of its (nonzero) digits is 1244160, while the sum is 53.

The spelling of 189502184690 in words is "one hundred eighty-nine billion, five hundred two million, one hundred eighty-four thousand, six hundred ninety".