189945607 has 8 divisors (see below), whose sum is σ = 201444192. Its totient is φ = 178483200.

The previous prime is 189945601. The next prime is 189945611. The reversal of 189945607 is 706549981.

189945607 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189945607 - 2³ = 189945599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189945601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2182 + ... + 19612.

It is an arithmetic number, because the mean of its divisors is an integer number (25180524).

Almost surely, 2^189945607 is an apocalyptic number.

189945607 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

189945607 is a deficient number, since it is larger than the sum of its proper divisors (11498585).

189945607 is a wasteful number, since it uses less digits than its factorization.

189945607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18089.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 189945607 is about 13782.0755693763. The cubic root of 189945607 is about 574.8348430518.

The spelling of 189945607 in words is "one hundred eighty-nine million, nine hundred forty-five thousand, six hundred seven".