18075697645 has 8 divisors (see below), whose sum is σ = 21755203704. Its totient is φ = 14417647104.

The previous prime is 18075697613. The next prime is 18075697649. The reversal of 18075697645 is 54679657081.

It can be written as a sum of positive squares in 4 ways, for example, as 140327716 + 17935369929 = 11846^2 + 133923^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18075697645 - 2⁵ = 18075697613 is a prime.

It is a super-3 number, since 3×18075697645³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18075697645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18075697649) 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 7 ways as a sum of consecutive naturals, for example, 5362024 + ... + 5365393.

It is an arithmetic number, because the mean of its divisors is an integer number (2719400463).

Almost surely, 2^18075697645 is an apocalyptic number.

It is an amenable number.

18075697645 is a deficient number, since it is larger than the sum of its proper divisors (3679506059).

18075697645 is a wasteful number, since it uses less digits than its factorization.

18075697645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10727759.

The product of its (nonzero) digits is 12700800, while the sum is 58.

The spelling of 18075697645 in words is "eighteen billion, seventy-five million, six hundred ninety-seven thousand, six hundred forty-five".