1801886822 has 4 divisors (see below), whose sum is σ = 2702830236. Its totient is φ = 900943410.

The previous prime is 1801886809. The next prime is 1801886857. The reversal of 1801886822 is 2286881081.

It is a happy number.

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

It is a super-2 number, since 2×1801886822² = 6493592238594519368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450471704 + ... + 450471707.

It is an arithmetic number, because the mean of its divisors is an integer number (675707559).

Almost surely, 2^1801886822 is an apocalyptic number.

1801886822 is a deficient number, since it is larger than the sum of its proper divisors (900943414).

1801886822 is an equidigital number, since it uses as much as digits as its factorization.

1801886822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900943413.

The product of its (nonzero) digits is 98304, while the sum is 44.

The square root of 1801886822 is about 42448.6374575204. The cubic root of 1801886822 is about 1216.8652889299.

The spelling of 1801886822 in words is "one billion, eight hundred one million, eight hundred eighty-six thousand, eight hundred twenty-two".