18893527197 has 8 divisors (see below), whose sum is σ = 25194152544. Its totient is φ = 12594293328.

The previous prime is 18893527183. The next prime is 18893527199. The reversal of 18893527197 is 79172539881.

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

It is not a de Polignac number, because 18893527197 - 2¹⁰ = 18893526173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18893527197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18893527199) 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, 315763 + ... + 370800.

It is an arithmetic number, because the mean of its divisors is an integer number (3149269068).

Almost surely, 2^18893527197 is an apocalyptic number.

It is an amenable number.

18893527197 is a deficient number, since it is larger than the sum of its proper divisors (6300625347).

18893527197 is an equidigital number, since it uses as much as digits as its factorization.

18893527197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695739.

The product of its digits is 7620480, while the sum is 60.

The spelling of 18893527197 in words is "eighteen billion, eight hundred ninety-three million, five hundred twenty-seven thousand, one hundred ninety-seven".