1889222849 has 4 divisors (see below), whose sum is σ = 1940282964. Its totient is φ = 1838162736.

The previous prime is 1889222837. The next prime is 1889222851. The reversal of 1889222849 is 9482229881.

It is a happy number.

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 1038450625 + 850772224 = 32225^2 + 29168^2 .

It is a cyclic number.

It is not a de Polignac number, because 1889222849 - 2⁸ = 1889222593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1889222849.

It is not an unprimeable number, because it can be changed into a prime (1889222899) 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, 25530002 + ... + 25530075.

It is an arithmetic number, because the mean of its divisors is an integer number (485070741).

Almost surely, 2^1889222849 is an apocalyptic number.

It is an amenable number.

1889222849 is a deficient number, since it is larger than the sum of its proper divisors (51060115).

1889222849 is an equidigital number, since it uses as much as digits as its factorization.

1889222849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51060114.

The product of its digits is 1327104, while the sum is 53.

The square root of 1889222849 is about 43465.1912339058. The cubic root of 1889222849 is about 1236.2161031654.

The spelling of 1889222849 in words is "one billion, eight hundred eighty-nine million, two hundred twenty-two thousand, eight hundred forty-nine".