1922216893 has 4 divisors (see below), whose sum is σ = 1942033660. Its totient is φ = 1902400128.

The previous prime is 1922216887. The next prime is 1922216921. The reversal of 1922216893 is 3986122291.

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 1057680484 + 864536409 = 32522^2 + 29403^2 .

It is a cyclic number.

It is not a de Polignac number, because 1922216893 - 2²⁹ = 1385345981 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 (1922213893) 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, 9908238 + ... + 9908431.

It is an arithmetic number, because the mean of its divisors is an integer number (485508415).

Almost surely, 2^1922216893 is an apocalyptic number.

It is an amenable number.

1922216893 is a deficient number, since it is larger than the sum of its proper divisors (19816767).

1922216893 is an equidigital number, since it uses as much as digits as its factorization.

1922216893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19816766.

The product of its digits is 93312, while the sum is 43.

The square root of 1922216893 is about 43843.0940171882. The cubic root of 1922216893 is about 1243.3711796386.

The spelling of 1922216893 in words is "one billion, nine hundred twenty-two million, two hundred sixteen thousand, eight hundred ninety-three".