18137645485 has 8 divisors (see below), whose sum is σ = 21765987936. Its totient is φ = 14509574160.

The previous prime is 18137645473. The next prime is 18137645489. The reversal of 18137645485 is 58454673181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18137645485 - 2¹³ = 18137637293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18137645489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134022 + ... + 232888.

It is an arithmetic number, because the mean of its divisors is an integer number (2720748492).

Almost surely, 2^18137645485 is an apocalyptic number.

It is an amenable number.

18137645485 is a deficient number, since it is larger than the sum of its proper divisors (3628342451).

18137645485 is an equidigital number, since it uses as much as digits as its factorization.

18137645485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135563.

The product of its digits is 3225600, while the sum is 52.

The spelling of 18137645485 in words is "eighteen billion, one hundred thirty-seven million, six hundred forty-five thousand, four hundred eighty-five".