189800533 has 6 divisors (see below), whose sum is σ = 204454082. Its totient is φ = 175154640.

The previous prime is 189800503. The next prime is 189800561. The reversal of 189800533 is 335008981.

It can be written as a sum of positive squares in 3 ways, for example, as 70946929 + 118853604 = 8423^2 + 10902^2 .

It is not a de Polignac number, because 189800533 - 2⁹ = 189800021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189800492 and 189800501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189800503) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47763 + ... + 51583.

Almost surely, 2^189800533 is an apocalyptic number.

189800533 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

189800533 is a deficient number, since it is larger than the sum of its proper divisors (14653549).

189800533 is an frugal number, since it uses more digits than its factorization.

189800533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7655 (or 3834 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 189800533 is about 13776.8114235479. The cubic root of 189800533 is about 574.6884593380.

The spelling of 189800533 in words is "one hundred eighty-nine million, eight hundred thousand, five hundred thirty-three".