1889711473 has 4 divisors (see below), whose sum is σ = 2035073908. Its totient is φ = 1744349040.

The previous prime is 1889711459. The next prime is 1889711477. The reversal of 1889711473 is 3741179881.

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

It can be written as a sum of positive squares in 2 ways, for example, as 829036849 + 1060674624 = 28793^2 + 32568^2 .

It is a cyclic number.

It is not a de Polignac number, because 1889711473 - 2⁹ = 1889710961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1889711477) 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, 72681198 + ... + 72681223.

It is an arithmetic number, because the mean of its divisors is an integer number (508768477).

Almost surely, 2^1889711473 is an apocalyptic number.

1889711473 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1889711473 is a deficient number, since it is larger than the sum of its proper divisors (145362435).

1889711473 is a wasteful number, since it uses less digits than its factorization.

1889711473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145362434.

The product of its digits is 338688, while the sum is 49.

The square root of 1889711473 is about 43470.8117361523. The cubic root of 1889711473 is about 1236.3226712866.

The spelling of 1889711473 in words is "one billion, eight hundred eighty-nine million, seven hundred eleven thousand, four hundred seventy-three".