18349630416 has 60 divisors (see below), whose sum is σ = 55303752868. Its totient is φ = 5646039552.

The previous prime is 18349630339. The next prime is 18349630441. The reversal of 18349630416 is 61403694381.

18349630416 is a `hidden beast` number, since 1 + 8 + 3 + 4 + 9 + 630 + 4 + 1 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6599937600 + 11749692816 = 81240^2 + 108396^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4899205 + ... + 4902948.

Almost surely, 2^18349630416 is an apocalyptic number.

18349630416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18349630416 is an abundant number, since it is smaller than the sum of its proper divisors (36954122452).

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

18349630416 is a wasteful number, since it uses less digits than its factorization.

18349630416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9802180 (or 9802171 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 18349630416 in words is "eighteen billion, three hundred forty-nine million, six hundred thirty thousand, four hundred sixteen".