1803220142 has 8 divisors (see below), whose sum is σ = 2762379936. Its totient is φ = 882426832.

The previous prime is 1803220129. The next prime is 1803220163. The reversal of 1803220142 is 2410223081.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9591503 + ... + 9591690.

It is an arithmetic number, because the mean of its divisors is an integer number (345297492).

Almost surely, 2^1803220142 is an apocalyptic number.

1803220142 is a deficient number, since it is larger than the sum of its proper divisors (959159794).

1803220142 is a wasteful number, since it uses less digits than its factorization.

1803220142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19183242.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1803220142 is about 42464.3396510531. The cubic root of 1803220142 is about 1217.1653578696.

The spelling of 1803220142 in words is "one billion, eight hundred three million, two hundred twenty thousand, one hundred forty-two".