189481533 has 8 divisors (see below), whose sum is σ = 252706368. Its totient is φ = 126288864.

The previous prime is 189481529. The next prime is 189481571. The reversal of 189481533 is 335184981.

189481533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 189481533 - 2² = 189481529 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189485533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15841 + ... + 25097.

It is an arithmetic number, because the mean of its divisors is an integer number (31588296).

Almost surely, 2^189481533 is an apocalyptic number.

It is an amenable number.

189481533 is a deficient number, since it is larger than the sum of its proper divisors (63224835).

189481533 is an equidigital number, since it uses as much as digits as its factorization.

189481533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16083.

The product of its digits is 103680, while the sum is 42.

The square root of 189481533 is about 13765.2291299491. The cubic root of 189481533 is about 574.3663168981.

The spelling of 189481533 in words is "one hundred eighty-nine million, four hundred eighty-one thousand, five hundred thirty-three".