18703867136397 has 8 divisors (see below), whose sum is σ = 25742956919040. Its totient is φ = 12067011055680.

The previous prime is 18703867136389. The next prime is 18703867136407. The reversal of 18703867136397 is 79363176830781.

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

It is not a de Polignac number, because 18703867136397 - 2³ = 18703867136389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18703867135397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100558425372 + ... + 100558425557.

It is an arithmetic number, because the mean of its divisors is an integer number (3217869614880).

Almost surely, 2^{18703867136397} is an apocalyptic number.

It is an amenable number.

18703867136397 is a deficient number, since it is larger than the sum of its proper divisors (7039089782643).

18703867136397 is a wasteful number, since it uses less digits than its factorization.

18703867136397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201116850963.

The product of its (nonzero) digits is 192036096, while the sum is 69.

The spelling of 18703867136397 in words is "eighteen trillion, seven hundred three billion, eight hundred sixty-seven million, one hundred thirty-six thousand, three hundred ninety-seven".