1801185422 has 16 divisors (see below), whose sum is σ = 2732935680. Its totient is φ = 890249472.

The previous prime is 1801185413. The next prime is 1801185487. The reversal of 1801185422 is 2245811081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76154 + ... + 96962.

It is an arithmetic number, because the mean of its divisors is an integer number (170808480).

Almost surely, 2^1801185422 is an apocalyptic number.

1801185422 is a deficient number, since it is larger than the sum of its proper divisors (931750258).

1801185422 is a wasteful number, since it uses less digits than its factorization.

1801185422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21307.

The product of its (nonzero) digits is 5120, while the sum is 32.

The square root of 1801185422 is about 42440.3749040934. The cubic root of 1801185422 is about 1216.7073766658.

The spelling of 1801185422 in words is "one billion, eight hundred one million, one hundred eighty-five thousand, four hundred twenty-two".