189490716234 has 48 divisors (see below), whose sum is σ = 412318824840. Its totient is φ = 62893670400.

The previous prime is 189490716221. The next prime is 189490716251. The reversal of 189490716234 is 432617094981.

189490716234 is a `hidden beast` number, since 1 + 8 + 9 + 4 + 9 + 0 + 7 + 1 + 623 + 4 = 666.

189490716234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 141199335225 + 48291381009 = 375765^2 + 219753^2 .

It is a super-2 number, since 2×189490716234² (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 (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15264222 + ... + 15276630.

Almost surely, 2^189490716234 is an apocalyptic number.

189490716234 is an abundant number, since it is smaller than the sum of its proper divisors (222828108606).

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

189490716234 is a wasteful number, since it uses less digits than its factorization.

189490716234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15975 (or 15972 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 189490716234 in words is "one hundred eighty-nine billion, four hundred ninety million, seven hundred sixteen thousand, two hundred thirty-four".