18040546757 has 4 divisors (see below), whose sum is σ = 18460094400. Its totient is φ = 17620999116.

The previous prime is 18040546753. The next prime is 18040546781. The reversal of 18040546757 is 75764504081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18040546757 - 2² = 18040546753 is a prime.

It is a super-2 number, since 2×18040546757² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18040546753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209773757 + ... + 209773842.

It is an arithmetic number, because the mean of its divisors is an integer number (4615023600).

Almost surely, 2^18040546757 is an apocalyptic number.

It is an amenable number.

18040546757 is a deficient number, since it is larger than the sum of its proper divisors (419547643).

18040546757 is an equidigital number, since it uses as much as digits as its factorization.

18040546757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419547642.

The product of its (nonzero) digits is 940800, while the sum is 47.

The spelling of 18040546757 in words is "eighteen billion, forty million, five hundred forty-six thousand, seven hundred fifty-seven".