189238237 has 16 divisors (see below), whose sum is σ = 203360112. Its totient is φ = 175472640.

The previous prime is 189238211. The next prime is 189238241. The reversal of 189238237 is 732832981.

It can be written as a sum of positive squares in 8 ways, for example, as 16736281 + 172501956 = 4091^2 + 13134^2 .

It is not a de Polignac number, because 189238237 - 2⁷ = 189238109 is a prime.

It is a super-2 number, since 2×189238237² = 71622220685736338, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (145152) is a multiple of the sum of its prime divisors (768).

It is a junction number, because it is equal to n+sod(n) for n = 189238193 and 189238202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189238267) 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, 449287 + ... + 449707.

It is an arithmetic number, because the mean of its divisors is an integer number (12710007).

Almost surely, 2^189238237 is an apocalyptic number.

189238237 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

189238237 is a deficient number, since it is larger than the sum of its proper divisors (14121875).

189238237 is a wasteful number, since it uses less digits than its factorization.

189238237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768.

The product of its digits is 145152, while the sum is 43.

The square root of 189238237 is about 13756.3889520470. The cubic root of 189238237 is about 574.1203810937.

The spelling of 189238237 in words is "one hundred eighty-nine million, two hundred thirty-eight thousand, two hundred thirty-seven".