1821080712 has 32 divisors (see below), whose sum is σ = 4966584480. Its totient is φ = 551842560.

The previous prime is 1821080699. The next prime is 1821080717. The reversal of 1821080712 is 2170801281.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1821080712.

It is not an unprimeable number, because it can be changed into a prime (1821080717) 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, 3448753 + ... + 3449280.

It is an arithmetic number, because the mean of its divisors is an integer number (155205765).

Almost surely, 2^1821080712 is an apocalyptic number.

1821080712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1821080712 is an abundant number, since it is smaller than the sum of its proper divisors (3145503768).

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

1821080712 is a wasteful number, since it uses less digits than its factorization.

1821080712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6898053 (or 6898049 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 30.

The square root of 1821080712 is about 42674.1222756837. The cubic root of 1821080712 is about 1221.1707636118.

Adding to 1821080712 its reverse (2170801281), we get a palindrome (3991881993).

The spelling of 1821080712 in words is "one billion, eight hundred twenty-one million, eighty thousand, seven hundred twelve".