18620250118 has 4 divisors (see below), whose sum is σ = 27930375180. Its totient is φ = 9310125058.

The previous prime is 18620250113. The next prime is 18620250137. The reversal of 18620250118 is 81105202681.

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 (18620250113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4655062528 + ... + 4655062531.

It is an arithmetic number, because the mean of its divisors is an integer number (6982593795).

Almost surely, 2^18620250118 is an apocalyptic number.

18620250118 is a deficient number, since it is larger than the sum of its proper divisors (9310125062).

18620250118 is an equidigital number, since it uses as much as digits as its factorization.

18620250118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9310125061.

The product of its (nonzero) digits is 7680, while the sum is 34.

Adding to 18620250118 its reverse (81105202681), we get a palindrome (99725452799).

The spelling of 18620250118 in words is "eighteen billion, six hundred twenty million, two hundred fifty thousand, one hundred eighteen".