1819243242 has 24 divisors (see below), whose sum is σ = 3950856000. Its totient is φ = 605004840.

The previous prime is 1819243177. The next prime is 1819243249. The reversal of 1819243242 is 2423429181.

1819243242 is a `hidden beast` number, since 181 + 9 + 2 + 432 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1819243197 and 1819243206.

It is not an unprimeable number, because it can be changed into a prime (1819243249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109492 + ... + 125007.

It is an arithmetic number, because the mean of its divisors is an integer number (164619000).

Almost surely, 2^1819243242 is an apocalyptic number.

1819243242 is an abundant number, since it is smaller than the sum of its proper divisors (2131612758).

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

1819243242 is a wasteful number, since it uses less digits than its factorization.

1819243242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234938 (or 234935 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 1819243242 is about 42652.5877526792. The cubic root of 1819243242 is about 1220.7599050599.

The spelling of 1819243242 in words is "one billion, eight hundred nineteen million, two hundred forty-three thousand, two hundred forty-two".