1820012824 has 32 divisors (see below), whose sum is σ = 3903300000. Its totient is φ = 779351040.

The previous prime is 1820012771. The next prime is 1820012851. The reversal of 1820012824 is 4282100281.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 1820012792 and 1820012801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56934 + ... + 82954.

It is an arithmetic number, because the mean of its divisors is an integer number (121978125).

Almost surely, 2^1820012824 is an apocalyptic number.

1820012824 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1820012824 is an abundant number, since it is smaller than the sum of its proper divisors (2083287176).

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

1820012824 is a wasteful number, since it uses less digits than its factorization.

1820012824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27283 (or 27279 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 1820012824 is about 42661.6083147366. The cubic root of 1820012824 is about 1220.9320173583.

The spelling of 1820012824 in words is "one billion, eight hundred twenty million, twelve thousand, eight hundred twenty-four".