18175408545 has 48 divisors (see below), whose sum is σ = 34024294080. Its totient is φ = 8260672896.

The previous prime is 18175408507. The next prime is 18175408549. The reversal of 18175408545 is 54580457181.

It is not a de Polignac number, because 18175408545 - 2¹⁴ = 18175392161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18175408494 and 18175408503.

It is not an unprimeable number, because it can be changed into a prime (18175408549) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55686 + ... + 198624.

It is an arithmetic number, because the mean of its divisors is an integer number (708839460).

Almost surely, 2^18175408545 is an apocalyptic number.

18175408545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18175408545 is a deficient number, since it is larger than the sum of its proper divisors (15848885535).

18175408545 is a wasteful number, since it uses less digits than its factorization.

18175408545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143134 (or 143127 counting only the distinct ones).

The product of its (nonzero) digits is 896000, while the sum is 48.

The spelling of 18175408545 in words is "eighteen billion, one hundred seventy-five million, four hundred eight thousand, five hundred forty-five".