1813930506612 has 192 divisors, whose sum is σ = 5413550284800. Its totient is φ = 514515110400.

The previous prime is 1813930506589. The next prime is 1813930506631. The reversal of 1813930506612 is 2166050393181.

1813930506612 is a `hidden beast` number, since 1 + 8 + 139 + 3 + 0 + 506 + 6 + 1 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 232760188 + ... + 232767980.

It is an arithmetic number, because the mean of its divisors is an integer number (28195574400).

Almost surely, 2^{1813930506612} is an apocalyptic number.

1813930506612 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 1813930506612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2706775142400).

1813930506612 is an abundant number, since it is smaller than the sum of its proper divisors (3599619778188).

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

1813930506612 is a wasteful number, since it uses less digits than its factorization.

1813930506612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10003 (or 9995 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

Adding to 1813930506612 its reverse (2166050393181), we get a palindrome (3979980899793).

The spelling of 1813930506612 in words is "one trillion, eight hundred thirteen billion, nine hundred thirty million, five hundred six thousand, six hundred twelve".