18603485717 has 4 divisors (see below), whose sum is σ = 18619080780. Its totient is φ = 18587890656.

The previous prime is 18603485689. The next prime is 18603485731. The reversal of 18603485717 is 71758430681.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3950625316 + 14652860401 = 62854^2 + 121049^2 .

It is a cyclic number.

It is not a de Polignac number, because 18603485717 - 2³² = 14308518421 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 (18603485737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7795742 + ... + 7798127.

It is an arithmetic number, because the mean of its divisors is an integer number (4654770195).

Almost surely, 2^18603485717 is an apocalyptic number.

It is an amenable number.

18603485717 is a deficient number, since it is larger than the sum of its proper divisors (15595063).

18603485717 is a wasteful number, since it uses less digits than its factorization.

18603485717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15595062.

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 18603485717 in words is "eighteen billion, six hundred three million, four hundred eighty-five thousand, seven hundred seventeen".