1819102121300 has 36 divisors (see below), whose sum is σ = 3949306199580. Its totient is φ = 727298987520.

The previous prime is 1819102121251. The next prime is 1819102121339. The reversal of 1819102121300 is 31212019181.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 47509177156 + 1771592944144 = 217966^2 + 1331012^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4059299 + ... + 4485098.

Almost surely, 2^{1819102121300} is an apocalyptic number.

1819102121300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1819102121300 is an abundant number, since it is smaller than the sum of its proper divisors (2130204078280).

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

1819102121300 is a wasteful number, since it uses less digits than its factorization.

1819102121300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8546540 (or 8546533 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 29.

The spelling of 1819102121300 in words is "one trillion, eight hundred nineteen billion, one hundred two million, one hundred twenty-one thousand, three hundred".