189929484481 has 9 divisors (see below), whose sum is σ = 208770735873. Its totient is φ = 172658809620.

The previous prime is 189929484469. The next prime is 189929484497. The reversal of 189929484481 is 184484929981.

The square root of 189929484481 is 435809.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 189929484481 - 2³³ = 181339549889 is a prime.

It is a super-2 number, since 2×189929484481² (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 (189929484461) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4774090 + ... + 4813708.

Almost surely, 2^189929484481 is an apocalyptic number.

189929484481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

189929484481 is the 435809-th square number.

189929484481 is the 217905-th centered octagonal number.

It is an amenable number.

189929484481 is a deficient number, since it is larger than the sum of its proper divisors (18841251392).

189929484481 is an frugal number, since it uses more digits than its factorization.

189929484481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79260 (or 39630 counting only the distinct ones).

The product of its digits is 47775744, while the sum is 67.

The spelling of 189929484481 in words is "one hundred eighty-nine billion, nine hundred twenty-nine million, four hundred eighty-four thousand, four hundred eighty-one".