18312741436 has 24 divisors (see below), whose sum is σ = 35533819440. Its totient is φ = 8187513600.

The previous prime is 18312741431. The next prime is 18312741449. The reversal of 18312741436 is 63414721381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18312741431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3408781 + ... + 3414148.

It is an arithmetic number, because the mean of its divisors is an integer number (1480575810).

Almost surely, 2^18312741436 is an apocalyptic number.

It is an amenable number.

18312741436 is a deficient number, since it is larger than the sum of its proper divisors (17221078004).

18312741436 is a wasteful number, since it uses less digits than its factorization.

18312741436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6823005 (or 6823003 counting only the distinct ones).

The product of its digits is 96768, while the sum is 40.

The spelling of 18312741436 in words is "eighteen billion, three hundred twelve million, seven hundred forty-one thousand, four hundred thirty-six".