18303782145 has 128 divisors (see below), whose sum is σ = 35467407360. Its totient is φ = 7955988480.

The previous prime is 18303782137. The next prime is 18303782201. The reversal of 18303782145 is 54128730381.

It is not a de Polignac number, because 18303782145 - 2³ = 18303782137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18303782097 and 18303782106.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6992877 + ... + 6995493.

It is an arithmetic number, because the mean of its divisors is an integer number (277089120).

Almost surely, 2^18303782145 is an apocalyptic number.

18303782145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18303782145 is a deficient number, since it is larger than the sum of its proper divisors (17163625215).

18303782145 is a wasteful number, since it uses less digits than its factorization.

18303782145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775.

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 18303782145 in words is "eighteen billion, three hundred three million, seven hundred eighty-two thousand, one hundred forty-five".