18103510368 has 120 divisors (see below), whose sum is σ = 54681181632. Its totient is φ = 5871377664.

The previous prime is 18103510357. The next prime is 18103510429. The reversal of 18103510368 is 86301530181.

18103510368 is a `hidden beast` number, since 1 + 8 + 103 + 510 + 36 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1521 + ... + 190287.

Almost surely, 2^18103510368 is an apocalyptic number.

18103510368 is a gapful number since it is divisible by the number (18) 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 18103510368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27340590816).

18103510368 is an abundant number, since it is smaller than the sum of its proper divisors (36577671264).

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

18103510368 is a wasteful number, since it uses less digits than its factorization.

18103510368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188826 (or 188809 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 18103510368 in words is "eighteen billion, one hundred three million, five hundred ten thousand, three hundred sixty-eight".