18685361182354 has 8 divisors (see below), whose sum is σ = 28030985614908. Its totient is φ = 9341699310720.

The previous prime is 18685361182333. The next prime is 18685361182357. The reversal of 18685361182354 is 45328116358681.

It can be written as a sum of positive squares in 2 ways, for example, as 17904974456329 + 780386726025 = 4231427^2 + 883395^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 18685361182292 and 18685361182301.

It is not an unprimeable number, because it can be changed into a prime (18685361182357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490616427 + ... + 490654510.

Almost surely, 2^{18685361182354} is an apocalyptic number.

18685361182354 is a deficient number, since it is larger than the sum of its proper divisors (9345624432554).

18685361182354 is an equidigital number, since it uses as much as digits as its factorization.

18685361182354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981280460.

The product of its digits is 33177600, while the sum is 61.

The spelling of 18685361182354 in words is "eighteen trillion, six hundred eighty-five billion, three hundred sixty-one million, one hundred eighty-two thousand, three hundred fifty-four".