1081210812 has 96 divisors (see below), whose sum is σ = 2969374464. Its totient is φ = 302515200.

The previous prime is 1081210783. The next prime is 1081210847. The reversal of 1081210812 is 2180121801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114387 + ... + 123477.

It is an arithmetic number, because the mean of its divisors is an integer number (30930984).

Almost surely, 2^1081210812 is an apocalyptic number.

1081210812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1081210812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1484687232).

1081210812 is an abundant number, since it is smaller than the sum of its proper divisors (1888163652).

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

1081210812 is a wasteful number, since it uses less digits than its factorization.

1081210812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9179 (or 9177 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 24.

The square root of 1081210812 is about 32881.7702078218. The cubic root of 1081210812 is about 1026.3688432156.

The spelling of 1081210812 in words is "one billion, eighty-one million, two hundred ten thousand, eight hundred twelve".