189481535 has 4 divisors (see below), whose sum is σ = 227377848. Its totient is φ = 151585224.

The previous prime is 189481529. The next prime is 189481571. The reversal of 189481535 is 535184981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 535184981 = 397 ⋅1348073.

It is a cyclic number.

It is not a de Polignac number, because 189481535 - 2¹⁴ = 189465151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18948149 + ... + 18948158.

It is an arithmetic number, because the mean of its divisors is an integer number (56844462).

Almost surely, 2^189481535 is an apocalyptic number.

189481535 is a deficient number, since it is larger than the sum of its proper divisors (37896313).

189481535 is an equidigital number, since it uses as much as digits as its factorization.

189481535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37896312.

The product of its digits is 172800, while the sum is 44.

The square root of 189481535 is about 13765.2292025959. The cubic root of 189481535 is about 574.3663189190.

The spelling of 189481535 in words is "one hundred eighty-nine million, four hundred eighty-one thousand, five hundred thirty-five".