18368685037 has 4 divisors (see below), whose sum is σ = 18961223296. Its totient is φ = 17776146780.

The previous prime is 18368685029. The next prime is 18368685077. The reversal of 18368685037 is 73058686381.

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, and also an emirpimes, since its reverse is a distinct semiprime: 73058686381 = 12821 ⋅5698361.

It is a cyclic number.

It is not a de Polignac number, because 18368685037 - 2³ = 18368685029 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 (18368685077) 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, 296269083 + ... + 296269144.

It is an arithmetic number, because the mean of its divisors is an integer number (4740305824).

Almost surely, 2^18368685037 is an apocalyptic number.

It is an amenable number.

18368685037 is a deficient number, since it is larger than the sum of its proper divisors (592538259).

18368685037 is an equidigital number, since it uses as much as digits as its factorization.

18368685037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592538258.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 18368685037 in words is "eighteen billion, three hundred sixty-eight million, six hundred eighty-five thousand, thirty-seven".