18182012734 has 4 divisors (see below), whose sum is σ = 27273019104. Its totient is φ = 9091006366.

The previous prime is 18182012701. The next prime is 18182012747. The reversal of 18182012734 is 43721028181.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 18182012693 and 18182012702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4545503182 + ... + 4545503185.

It is an arithmetic number, because the mean of its divisors is an integer number (6818254776).

Almost surely, 2^18182012734 is an apocalyptic number.

18182012734 is a deficient number, since it is larger than the sum of its proper divisors (9091006370).

18182012734 is an equidigital number, since it uses as much as digits as its factorization.

18182012734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9091006369.

The product of its (nonzero) digits is 21504, while the sum is 37.

The spelling of 18182012734 in words is "eighteen billion, one hundred eighty-two million, twelve thousand, seven hundred thirty-four".