18252543718 has 16 divisors (see below), whose sum is σ = 27975660480. Its totient is φ = 8927522496.

The previous prime is 18252543707. The next prime is 18252543721. The reversal of 18252543718 is 81734525281.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138628 + ... + 236056.

It is an arithmetic number, because the mean of its divisors is an integer number (1748478780).

Almost surely, 2^18252543718 is an apocalyptic number.

18252543718 is a deficient number, since it is larger than the sum of its proper divisors (9723116762).

18252543718 is a wasteful number, since it uses less digits than its factorization.

18252543718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99471.

The product of its digits is 537600, while the sum is 46.

The spelling of 18252543718 in words is "eighteen billion, two hundred fifty-two million, five hundred forty-three thousand, seven hundred eighteen".