189231735 has 64 divisors (see below), whose sum is σ = 397393920. Its totient is φ = 74494080.

The previous prime is 189231733. The next prime is 189231737. The reversal of 189231735 is 537132981.

It is an interprime number because it is at equal distance from previous prime (189231733) and next prime (189231737).

It is not a de Polignac number, because 189231735 - 2¹ = 189231733 is a prime.

It is a super-2 number, since 2×189231735² = 71617299062220450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 189231693 and 189231702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189231733) 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 63 ways as a sum of consecutive naturals, for example, 17634 + ... + 26256.

It is an arithmetic number, because the mean of its divisors is an integer number (6209280).

Almost surely, 2^189231735 is an apocalyptic number.

189231735 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

189231735 is an abundant number, since it is smaller than the sum of its proper divisors (208162185).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189231735 is a wasteful number, since it uses less digits than its factorization.

189231735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8668.

The product of its digits is 45360, while the sum is 39.

The square root of 189231735 is about 13756.1526234627. The cubic root of 189231735 is about 574.1138056547.

The spelling of 189231735 in words is "one hundred eighty-nine million, two hundred thirty-one thousand, seven hundred thirty-five".