1816349934490 has 192 divisors, whose sum is σ = 4277794550400. Its totient is φ = 549824454144.

The previous prime is 1816349934479. The next prime is 1816349934521. The reversal of 1816349934490 is 944399436181.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13840401 + ... + 13971019.

It is an arithmetic number, because the mean of its divisors is an integer number (22280179950).

Almost surely, 2^{1816349934490} is an apocalyptic number.

1816349934490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1816349934490 is an abundant number, since it is smaller than the sum of its proper divisors (2461444615910).

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

1816349934490 is a wasteful number, since it uses less digits than its factorization.

1816349934490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130749 (or 130742 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 61.

The spelling of 1816349934490 in words is "one trillion, eight hundred sixteen billion, three hundred forty-nine million, nine hundred thirty-four thousand, four hundred ninety".