1892228665 has 4 divisors (see below), whose sum is σ = 2270674404. Its totient is φ = 1513782928.

The previous prime is 1892228651. The next prime is 1892228669. The reversal of 1892228665 is 5668222981.

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 339001744 + 1553226921 = 18412^2 + 39411^2 .

It is a cyclic number.

It is not a de Polignac number, because 1892228665 - 2¹⁷ = 1892097593 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1892228669) 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, 189222862 + ... + 189222871.

It is an arithmetic number, because the mean of its divisors is an integer number (567668601).

Almost surely, 2^1892228665 is an apocalyptic number.

It is an amenable number.

1892228665 is a deficient number, since it is larger than the sum of its proper divisors (378445739).

1892228665 is an equidigital number, since it uses as much as digits as its factorization.

1892228665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378445738.

The product of its digits is 829440, while the sum is 49.

The square root of 1892228665 is about 43499.7547694237. The cubic root of 1892228665 is about 1236.8713759955.

The spelling of 1892228665 in words is "one billion, eight hundred ninety-two million, two hundred twenty-eight thousand, six hundred sixty-five".