189598493 has 12 divisors (see below), whose sum is σ = 220831452. Its totient is φ = 162308160.

The previous prime is 189598459. The next prime is 189598523. The reversal of 189598493 is 394895981.

189598493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 143113369 + 46485124 = 11963^2 + 6818^2 .

It is not a de Polignac number, because 189598493 - 2¹² = 189594397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189598793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46913 + ... + 50793.

It is an arithmetic number, because the mean of its divisors is an integer number (18402621).

Almost surely, 2^189598493 is an apocalyptic number.

It is an amenable number.

189598493 is a deficient number, since it is larger than the sum of its proper divisors (31232959).

189598493 is an equidigital number, since it uses as much as digits as its factorization.

189598493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4892 (or 4885 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 56.

The square root of 189598493 is about 13769.4768600699. The cubic root of 189598493 is about 574.4844710105.

It can be divided in two parts, 189598 and 493, that added together give a palindrome (190091).

The spelling of 189598493 in words is "one hundred eighty-nine million, five hundred ninety-eight thousand, four hundred ninety-three".