1812358244920 has 32 divisors (see below), whose sum is σ = 4077906275520. Its totient is φ = 724925480320.

The previous prime is 1812358244911. The next prime is 1812358244941. The reversal of 1812358244920 is 294428532181.

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, 1156065 + ... + 2227375.

It is an arithmetic number, because the mean of its divisors is an integer number (127434571110).

Almost surely, 2^{1812358244920} is an apocalyptic number.

1812358244920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1812358244920 is an abundant number, since it is smaller than the sum of its proper divisors (2265548030600).

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

1812358244920 is a wasteful number, since it uses less digits than its factorization.

1812358244920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113615 (or 1113611 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 49.

The spelling of 1812358244920 in words is "one trillion, eight hundred twelve billion, three hundred fifty-eight million, two hundred forty-four thousand, nine hundred twenty".