189834237 has 24 divisors (see below), whose sum is σ = 280530744. Its totient is φ = 123669504.

The previous prime is 189834233. The next prime is 189834289. The reversal of 189834237 is 732438981.

It can be written as a sum of positive squares in 4 ways, for example, as 799236 + 189035001 = 894^2 + 13749^2 .

It is not a de Polignac number, because 189834237 - 2² = 189834233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 189834192 and 189834201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189834233) 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, 72963 + ... + 75519.

It is an arithmetic number, because the mean of its divisors is an integer number (11688781).

Almost surely, 2^189834237 is an apocalyptic number.

It is an amenable number.

189834237 is a deficient number, since it is larger than the sum of its proper divisors (90696507).

189834237 is a wasteful number, since it uses less digits than its factorization.

189834237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2749 (or 2746 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 189834237 is about 13778.0345840762. The cubic root of 189834237 is about 574.7224742644.

It can be divided in two parts, 18983 and 4237, that added together give a triangular number (23220 = T₂₁₅).

The spelling of 189834237 in words is "one hundred eighty-nine million, eight hundred thirty-four thousand, two hundred thirty-seven".