1821548996 has 12 divisors (see below), whose sum is σ = 3188027052. Its totient is φ = 910684128.

The previous prime is 1821548977. The next prime is 1821549001. The reversal of 1821548996 is 6998451281.

It can be written as a sum of positive squares in 2 ways, for example, as 668946496 + 1152602500 = 25864^2 + 33950^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45686 + ... + 75698.

It is an arithmetic number, because the mean of its divisors is an integer number (265668921).

Almost surely, 2^1821548996 is an apocalyptic number.

It is an amenable number.

1821548996 is a deficient number, since it is larger than the sum of its proper divisors (1366478056).

1821548996 is a wasteful number, since it uses less digits than its factorization.

1821548996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45190 (or 45188 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 53.

The square root of 1821548996 is about 42679.6086673718. The cubic root of 1821548996 is about 1221.2754277848.

The spelling of 1821548996 in words is "one billion, eight hundred twenty-one million, five hundred forty-eight thousand, nine hundred ninety-six".