190889093 has 4 divisors (see below), whose sum is σ = 194490828. Its totient is φ = 187287360.

The previous prime is 190889081. The next prime is 190889099. The reversal of 190889093 is 390988091.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 72471169 + 118417924 = 8513^2 + 10882^2 .

It is a cyclic number.

It is not a de Polignac number, because 190889093 - 2⁸ = 190888837 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 (190889099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1800788 + ... + 1800893.

It is an arithmetic number, because the mean of its divisors is an integer number (48622707).

Almost surely, 2^190889093 is an apocalyptic number.

It is an amenable number.

190889093 is a deficient number, since it is larger than the sum of its proper divisors (3601735).

190889093 is an equidigital number, since it uses as much as digits as its factorization.

190889093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3601734.

The product of its (nonzero) digits is 139968, while the sum is 47.

The square root of 190889093 is about 13816.2619040028. The cubic root of 190889093 is about 575.7850328309.

It can be divided in two parts, 1908 and 89093, that multiplied together give a square (169989444 = 13038²).

The spelling of 190889093 in words is "one hundred ninety million, eight hundred eighty-nine thousand, ninety-three".