1812223968402 has 16 divisors (see below), whose sum is σ = 3837650756832. Its totient is φ = 568540852800.

The previous prime is 1812223968389. The next prime is 1812223968409. The reversal of 1812223968402 is 2048693222181.

It is not an unprimeable number, because it can be changed into a prime (1812223968409) 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, 8883450724 + ... + 8883450927.

It is an arithmetic number, because the mean of its divisors is an integer number (239853172302).

Almost surely, 2^{1812223968402} is an apocalyptic number.

1812223968402 is an abundant number, since it is smaller than the sum of its proper divisors (2025426788430).

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

1812223968402 is a wasteful number, since it uses less digits than its factorization.

1812223968402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17766901673.

The product of its (nonzero) digits is 663552, while the sum is 48.

The spelling of 1812223968402 in words is "one trillion, eight hundred twelve billion, two hundred twenty-three million, nine hundred sixty-eight thousand, four hundred two".