189733245 has 16 divisors (see below), whose sum is σ = 326925312. Its totient is φ = 93407040.

The previous prime is 189733207. The next prime is 189733249. The reversal of 189733245 is 542337981.

It is not a de Polignac number, because 189733245 - 2¹² = 189729149 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 189733197 and 189733206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189733249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 486301 + ... + 486690.

It is an arithmetic number, because the mean of its divisors is an integer number (20432832).

Almost surely, 2^189733245 is an apocalyptic number.

189733245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189733245 is a deficient number, since it is larger than the sum of its proper divisors (137192067).

189733245 is a wasteful number, since it uses less digits than its factorization.

189733245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973012.

The product of its digits is 181440, while the sum is 42.

The square root of 189733245 is about 13774.3691325592. The cubic root of 189733245 is about 574.6205385459.

The spelling of 189733245 in words is "one hundred eighty-nine million, seven hundred thirty-three thousand, two hundred forty-five".