18183838291820 has 24 divisors (see below), whose sum is σ = 39117427741728. Its totient is φ = 7096132016000.

The previous prime is 18183838291793. The next prime is 18183838291847. The reversal of 18183838291820 is 2819283838181.

It is an interprime number because it is at equal distance from previous prime (18183838291793) and next prime (18183838291847).

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, 11087705456 + ... + 11087707095.

It is an arithmetic number, because the mean of its divisors is an integer number (1629892822572).

Almost surely, 2^{18183838291820} is an apocalyptic number.

18183838291820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18183838291820 is an abundant number, since it is smaller than the sum of its proper divisors (20933589449908).

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

18183838291820 is a wasteful number, since it uses less digits than its factorization.

18183838291820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22175412601 (or 22175412599 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 62.

The spelling of 18183838291820 in words is "eighteen trillion, one hundred eighty-three billion, eight hundred thirty-eight million, two hundred ninety-one thousand, eight hundred twenty".