1812091299396 has 96 divisors (see below), whose sum is σ = 5107855872000. Its totient is φ = 488438512128.

The previous prime is 1812091299391. The next prime is 1812091299397. The reversal of 1812091299396 is 6939921902181.

It is not an unprimeable number, because it can be changed into a prime (1812091299391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1993861 + ... + 2756748.

It is an arithmetic number, because the mean of its divisors is an integer number (53206832000).

Almost surely, 2^{1812091299396} is an apocalyptic number.

It is an amenable number.

1812091299396 is an abundant number, since it is smaller than the sum of its proper divisors (3295764572604).

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

1812091299396 is a wasteful number, since it uses less digits than its factorization.

1812091299396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4750881 (or 4750879 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 60.

The spelling of 1812091299396 in words is "one trillion, eight hundred twelve billion, ninety-one million, two hundred ninety-nine thousand, three hundred ninety-six".