1820053338 has 16 divisors (see below), whose sum is σ = 3757529856. Its totient is φ = 587113920.

The previous prime is 1820053331. The next prime is 1820053349. The reversal of 1820053338 is 8333500281.

It is a junction number, because it is equal to n+sod(n) for n = 1820053299 and 1820053308.

It is not an unprimeable number, because it can be changed into a prime (1820053331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4892431 + ... + 4892802.

It is an arithmetic number, because the mean of its divisors is an integer number (234845616).

Almost surely, 2^1820053338 is an apocalyptic number.

1820053338 is an abundant number, since it is smaller than the sum of its proper divisors (1937476518).

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

1820053338 is a wasteful number, since it uses less digits than its factorization.

1820053338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9785269.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 1820053338 is about 42662.0831418251. The cubic root of 1820053338 is about 1220.9410767217.

The spelling of 1820053338 in words is "one billion, eight hundred twenty million, fifty-three thousand, three hundred thirty-eight".