18628249195 has 4 divisors (see below), whose sum is σ = 22353899040. Its totient is φ = 14902599352.

The previous prime is 18628249127. The next prime is 18628249201. The reversal of 18628249195 is 59194282681.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59194282681 = 47 ⋅1259452823.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18628249195 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1862824915 + ... + 1862824924.

It is an arithmetic number, because the mean of its divisors is an integer number (5588474760).

Almost surely, 2^18628249195 is an apocalyptic number.

18628249195 is a deficient number, since it is larger than the sum of its proper divisors (3725649845).

18628249195 is an equidigital number, since it uses as much as digits as its factorization.

18628249195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3725649844.

The product of its digits is 2488320, while the sum is 55.

The spelling of 18628249195 in words is "eighteen billion, six hundred twenty-eight million, two hundred forty-nine thousand, one hundred ninety-five".