18613498738 has 8 divisors (see below), whose sum is σ = 28336968432. Its totient is φ = 9167842596.

The previous prime is 18613498727. The next prime is 18613498753. The reversal of 18613498738 is 83789431681.

18613498738 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69453220 + ... + 69453487.

It is an arithmetic number, because the mean of its divisors is an integer number (3542121054).

Almost surely, 2^18613498738 is an apocalyptic number.

18613498738 is a deficient number, since it is larger than the sum of its proper divisors (9723469694).

18613498738 is a wasteful number, since it uses less digits than its factorization.

18613498738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138906776.

The product of its digits is 6967296, while the sum is 58.

The spelling of 18613498738 in words is "eighteen billion, six hundred thirteen million, four hundred ninety-eight thousand, seven hundred thirty-eight".