18898515014 has 4 divisors (see below), whose sum is σ = 28347772524. Its totient is φ = 9449257506.

The previous prime is 18898514959. The next prime is 18898515017. The reversal of 18898515014 is 41051589881.

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

It is a super-3 number, since 3×18898515014³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18898515017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4724628752 + ... + 4724628755.

It is an arithmetic number, because the mean of its divisors is an integer number (7086943131).

Almost surely, 2^18898515014 is an apocalyptic number.

18898515014 is a deficient number, since it is larger than the sum of its proper divisors (9449257510).

18898515014 is an equidigital number, since it uses as much as digits as its factorization.

18898515014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9449257509.

The product of its (nonzero) digits is 460800, while the sum is 50.

The spelling of 18898515014 in words is "eighteen billion, eight hundred ninety-eight million, five hundred fifteen thousand, fourteen".