1889221711 has 4 divisors (see below), whose sum is σ = 2034546472. Its totient is φ = 1743896952.

The previous prime is 1889221687. The next prime is 1889221753. The reversal of 1889221711 is 1171229881.

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 1889221711 - 2⁷ = 1889221583 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 (1889221811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72662361 + ... + 72662386.

It is an arithmetic number, because the mean of its divisors is an integer number (508636618).

Almost surely, 2^1889221711 is an apocalyptic number.

1889221711 is a deficient number, since it is larger than the sum of its proper divisors (145324761).

1889221711 is a wasteful number, since it uses less digits than its factorization.

1889221711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145324760.

The product of its digits is 16128, while the sum is 40.

The square root of 1889221711 is about 43465.1781429687. The cubic root of 1889221711 is about 1236.2158549480.

The spelling of 1889221711 in words is "one billion, eight hundred eighty-nine million, two hundred twenty-one thousand, seven hundred eleven".