1819912242 has 16 divisors (see below), whose sum is σ = 3643796160. Its totient is φ = 605975472.

The previous prime is 1819912231. The next prime is 1819912261. The reversal of 1819912242 is 2422199181.

It is a self number, because there is not a number n which added to its sum of digits gives 1819912242.

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, 159513 + ... + 170540.

It is an arithmetic number, because the mean of its divisors is an integer number (227737260).

Almost surely, 2^1819912242 is an apocalyptic number.

1819912242 is an abundant number, since it is smaller than the sum of its proper divisors (1823883918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1819912242 is a wasteful number, since it uses less digits than its factorization.

1819912242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330977.

The product of its digits is 20736, while the sum is 39.

The square root of 1819912242 is about 42660.4294633798. The cubic root of 1819912242 is about 1220.9095255668.

The spelling of 1819912242 in words is "one billion, eight hundred nineteen million, nine hundred twelve thousand, two hundred forty-two".