189488093 has 4 divisors (see below), whose sum is σ = 189763008. Its totient is φ = 189213180.

The previous prime is 189488051. The next prime is 189488113. The reversal of 189488093 is 390884981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 390884981 = 409 ⋅955709.

It is a cyclic number.

It is not a de Polignac number, because 189488093 - 2¹⁰ = 189487069 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 (189488003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136421 + ... + 137802.

It is an arithmetic number, because the mean of its divisors is an integer number (47440752).

Almost surely, 2^189488093 is an apocalyptic number.

It is an amenable number.

189488093 is a deficient number, since it is larger than the sum of its proper divisors (274915).

189488093 is an equidigital number, since it uses as much as digits as its factorization.

189488093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274914.

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 189488093 is about 13765.4674094271. The cubic root of 189488093 is about 574.3729451598.

The spelling of 189488093 in words is "one hundred eighty-nine million, four hundred eighty-eight thousand, ninety-three".