190993271 has 4 divisors (see below), whose sum is σ = 218278032. Its totient is φ = 163708512.

The previous prime is 190993267. The next prime is 190993277. The reversal of 190993271 is 172399091.

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

It is a cyclic number.

It is not a de Polignac number, because 190993271 - 2² = 190993267 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190993277) 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, 13642370 + ... + 13642383.

It is an arithmetic number, because the mean of its divisors is an integer number (54569508).

Almost surely, 2^190993271 is an apocalyptic number.

190993271 is a deficient number, since it is larger than the sum of its proper divisors (27284761).

190993271 is an equidigital number, since it uses as much as digits as its factorization.

190993271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27284760.

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

The square root of 190993271 is about 13820.0315122651. The cubic root of 190993271 is about 575.8897589546.

The spelling of 190993271 in words is "one hundred ninety million, nine hundred ninety-three thousand, two hundred seventy-one".