1820603072 has 56 divisors (see below), whose sum is σ = 3695803632. Its totient is φ = 889574400.

The previous prime is 1820603069. The next prime is 1820603077. The reversal of 1820603072 is 2703060281.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1820603077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 634922 + ... + 637782.

Almost surely, 2^1820603072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1820603072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1847901816).

1820603072 is an abundant number, since it is smaller than the sum of its proper divisors (1875200560).

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

1820603072 is a wasteful number, since it uses less digits than its factorization.

1820603072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3097 (or 3087 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 1820603072 is about 42668.5255428401. The cubic root of 1820603072 is about 1221.0639898332.

The spelling of 1820603072 in words is "one billion, eight hundred twenty million, six hundred three thousand, seventy-two".