18400769759 has 4 divisors (see below), whose sum is σ = 18402133704. Its totient is φ = 18399405816.

The previous prime is 18400769753. The next prime is 18400769771. The reversal of 18400769759 is 95796700481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95796700481 = 37 ⋅2589100013.

It is a cyclic number.

It is not a de Polignac number, because 18400769759 - 2⁸ = 18400769503 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 (18400769753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 661532 + ... + 688785.

It is an arithmetic number, because the mean of its divisors is an integer number (4600533426).

Almost surely, 2^18400769759 is an apocalyptic number.

18400769759 is a deficient number, since it is larger than the sum of its proper divisors (1363945).

18400769759 is a wasteful number, since it uses less digits than its factorization.

18400769759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363944.

The product of its (nonzero) digits is 3810240, while the sum is 56.

The spelling of 18400769759 in words is "eighteen billion, four hundred million, seven hundred sixty-nine thousand, seven hundred fifty-nine".