18421642114 has 4 divisors (see below), whose sum is σ = 27632463174. Its totient is φ = 9210821056.

The previous prime is 18421642111. The next prime is 18421642159. The reversal of 18421642114 is 41124612481.

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

It can be written as a sum of positive squares in only one way, i.e., 18378411489 + 43230625 = 135567^2 + 6575^2 .

It is a super-3 number, since 3×18421642114³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18421642114.

It is not an unprimeable number, because it can be changed into a prime (18421642111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4605410527 + ... + 4605410530.

Almost surely, 2^18421642114 is an apocalyptic number.

18421642114 is a deficient number, since it is larger than the sum of its proper divisors (9210821060).

18421642114 is an equidigital number, since it uses as much as digits as its factorization.

18421642114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9210821059.

The product of its digits is 12288, while the sum is 34.

The spelling of 18421642114 in words is "eighteen billion, four hundred twenty-one million, six hundred forty-two thousand, one hundred fourteen".