189747723 has 24 divisors (see below), whose sum is σ = 290191104. Its totient is φ = 109993840.

The previous prime is 189747703. The next prime is 189747731. The reversal of 189747723 is 327747981.

189747723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189747723 - 2¹⁸ = 189485579 is a prime.

It is a super-3 number, since 3×189747723³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (189747703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3015 + ... + 19712.

It is an arithmetic number, because the mean of its divisors is an integer number (12091296).

Almost surely, 2^189747723 is an apocalyptic number.

189747723 is a deficient number, since it is larger than the sum of its proper divisors (100443381).

189747723 is a wasteful number, since it uses less digits than its factorization.

189747723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22775 (or 22764 counting only the distinct ones).

The product of its digits is 592704, while the sum is 48.

The square root of 189747723 is about 13774.8946638441. The cubic root of 189747723 is about 574.6351540561.

The spelling of 189747723 in words is "one hundred eighty-nine million, seven hundred forty-seven thousand, seven hundred twenty-three".