190493009 has 4 divisors (see below), whose sum is σ = 217706304. Its totient is φ = 163279716.

The previous prime is 190493003. The next prime is 190493033. The reversal of 190493009 is 900394091.

190493009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 190493009 - 2¹⁶ = 190427473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 190493009.

It is not an unprimeable number, because it can be changed into a prime (190493003) 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, 13606637 + ... + 13606650.

It is an arithmetic number, because the mean of its divisors is an integer number (54426576).

Almost surely, 2^190493009 is an apocalyptic number.

It is an amenable number.

190493009 is a deficient number, since it is larger than the sum of its proper divisors (27213295).

190493009 is an equidigital number, since it uses as much as digits as its factorization.

190493009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27213294.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 190493009 is about 13801.9204823097. The cubic root of 190493009 is about 575.3865166837.

The spelling of 190493009 in words is "one hundred ninety million, four hundred ninety-three thousand, nine".