1835780442 has 8 divisors (see below), whose sum is σ = 3671560896. Its totient is φ = 611926812.

The previous prime is 1835780431. The next prime is 1835780447. The reversal of 1835780442 is 2440875381.

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

1835780442 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1835780394 and 1835780403.

It is not an unprimeable number, because it can be changed into a prime (1835780447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152981698 + ... + 152981709.

It is an arithmetic number, because the mean of its divisors is an integer number (458945112).

Almost surely, 2^1835780442 is an apocalyptic number.

1835780442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1835780442 is a wasteful number, since it uses less digits than its factorization.

1835780442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305963412.

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 1835780442 is about 42846.0084722019. The cubic root of 1835780442 is about 1224.4477181702.

The spelling of 1835780442 in words is "one billion, eight hundred thirty-five million, seven hundred eighty thousand, four hundred forty-two".