18360161547 has 32 divisors (see below), whose sum is σ = 30162693120. Its totient is φ = 9673810560.

The previous prime is 18360161471. The next prime is 18360161569. The reversal of 18360161547 is 74516106381.

It is not a de Polignac number, because 18360161547 - 2¹⁸ = 18359899403 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18360161499 and 18360161508.

It is not an unprimeable number, because it can be changed into a prime (18360161597) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 214297 + ... + 287477.

It is an arithmetic number, because the mean of its divisors is an integer number (942584160).

Almost surely, 2^18360161547 is an apocalyptic number.

18360161547 is a deficient number, since it is larger than the sum of its proper divisors (11802531573).

18360161547 is a wasteful number, since it uses less digits than its factorization.

18360161547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74123.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 18360161547 in words is "eighteen billion, three hundred sixty million, one hundred sixty-one thousand, five hundred forty-seven".