1822188851 has 4 divisors (see below), whose sum is σ = 2082501552. Its totient is φ = 1561876152.

The previous prime is 1822188833. The next prime is 1822188857. The reversal of 1822188851 is 1588812281.

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 1822188851 - 2¹⁸ = 1821926707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1822188857) 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, 130156340 + ... + 130156353.

It is an arithmetic number, because the mean of its divisors is an integer number (520625388).

Almost surely, 2^1822188851 is an apocalyptic number.

1822188851 is a deficient number, since it is larger than the sum of its proper divisors (260312701).

1822188851 is an equidigital number, since it uses as much as digits as its factorization.

1822188851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260312700.

The product of its digits is 81920, while the sum is 44.

The square root of 1822188851 is about 42687.1040362309. The cubic root of 1822188851 is about 1221.4184100689.

The spelling of 1822188851 in words is "one billion, eight hundred twenty-two million, one hundred eighty-eight thousand, eight hundred fifty-one".