18897636104702 has 4 divisors (see below), whose sum is σ = 28346454157056. Its totient is φ = 9448818052350.

The previous prime is 18897636104609. The next prime is 18897636104707. The reversal of 18897636104702 is 20740163679881.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18897636104707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4724409026174 + ... + 4724409026177.

It is an arithmetic number, because the mean of its divisors is an integer number (7086613539264).

Almost surely, 2^{18897636104702} is an apocalyptic number.

18897636104702 is a deficient number, since it is larger than the sum of its proper divisors (9448818052354).

18897636104702 is an equidigital number, since it uses as much as digits as its factorization.

18897636104702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9448818052353.

The product of its (nonzero) digits is 24385536, while the sum is 62.

The spelling of 18897636104702 in words is "eighteen trillion, eight hundred ninety-seven billion, six hundred thirty-six million, one hundred four thousand, seven hundred two".