190712993 has 4 divisors (see below), whose sum is σ = 191121840. Its totient is φ = 190304148.

The previous prime is 190712959. The next prime is 190712999. The reversal of 190712993 is 399217091.

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 190712993 - 2⁸ = 190712737 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 190712993.

It is not an unprimeable number, because it can be changed into a prime (190712999) 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, 203723 + ... + 204656.

It is an arithmetic number, because the mean of its divisors is an integer number (47780460).

Almost surely, 2^190712993 is an apocalyptic number.

It is an amenable number.

190712993 is a deficient number, since it is larger than the sum of its proper divisors (408847).

190712993 is an equidigital number, since it uses as much as digits as its factorization.

190712993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408846.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 190712993 is about 13809.8875085933. The cubic root of 190712993 is about 575.6079196204.

The spelling of 190712993 in words is "one hundred ninety million, seven hundred twelve thousand, nine hundred ninety-three".