189733645 has 8 divisors (see below), whose sum is σ = 227789280. Its totient is φ = 151714320.

The previous prime is 189733633. The next prime is 189733657. The reversal of 189733645 is 546337981.

It is an interprime number because it is at equal distance from previous prime (189733633) and next prime (189733657).

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

It is not a de Polignac number, because 189733645 - 2⁵ = 189733613 is a prime.

It is a super-3 number, since 3×189733645³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 189733595 and 189733604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4186 + ... + 19924.

It is an arithmetic number, because the mean of its divisors is an integer number (28473660).

Almost surely, 2^189733645 is an apocalyptic number.

It is an amenable number.

189733645 is a deficient number, since it is larger than the sum of its proper divisors (38055635).

189733645 is a wasteful number, since it uses less digits than its factorization.

189733645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18155.

The product of its digits is 544320, while the sum is 46.

The square root of 189733645 is about 13774.3836522728. The cubic root of 189733645 is about 574.6209423550.

The spelling of 189733645 in words is "one hundred eighty-nine million, seven hundred thirty-three thousand, six hundred forty-five".