1824481821 has 16 divisors (see below), whose sum is σ = 2561715200. Its totient is φ = 1151836848.

The previous prime is 1824481801. The next prime is 1824481889. The reversal of 1824481821 is 1281844281.

It is not a de Polignac number, because 1824481821 - 2¹⁹ = 1823957533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1824481821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1824481801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183660 + ... + 193338.

It is an arithmetic number, because the mean of its divisors is an integer number (160107200).

Almost surely, 2^1824481821 is an apocalyptic number.

It is an amenable number.

1824481821 is a deficient number, since it is larger than the sum of its proper divisors (737233379).

1824481821 is a wasteful number, since it uses less digits than its factorization.

1824481821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13008.

The product of its digits is 32768, while the sum is 39.

The square root of 1824481821 is about 42713.9534695631. The cubic root of 1824481821 is about 1221.9305234424.

The spelling of 1824481821 in words is "one billion, eight hundred twenty-four million, four hundred eighty-one thousand, eight hundred twenty-one".