1711143491 has 4 divisors (see below), whose sum is σ = 1711526832. Its totient is φ = 1710760152.

The previous prime is 1711143461. The next prime is 1711143503. The reversal of 1711143491 is 1943411171.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1711143491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1711143461) 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, 184895 + ... + 193928.

It is an arithmetic number, because the mean of its divisors is an integer number (427881708).

Almost surely, 2^1711143491 is an apocalyptic number.

1711143491 is a deficient number, since it is larger than the sum of its proper divisors (383341).

1711143491 is an equidigital number, since it uses as much as digits as its factorization.

1711143491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383340.

The product of its digits is 3024, while the sum is 32.

The square root of 1711143491 is about 41365.9702049885. The cubic root of 1711143491 is about 1196.0852733072.

The spelling of 1711143491 in words is "one billion, seven hundred eleven million, one hundred forty-three thousand, four hundred ninety-one".