18908180139 has 8 divisors (see below), whose sum is σ = 25315517392. Its totient is φ = 12553148160.

The previous prime is 18908180131. The next prime is 18908180149. The reversal of 18908180139 is 93108180981.

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

It is not a de Polignac number, because 18908180139 - 2³ = 18908180131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18908180131) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13075474 + ... + 13076919.

It is an arithmetic number, because the mean of its divisors is an integer number (3164439674).

Almost surely, 2^18908180139 is an apocalyptic number.

18908180139 is a deficient number, since it is larger than the sum of its proper divisors (6407337253).

18908180139 is a wasteful number, since it uses less digits than its factorization.

18908180139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26152637.

The product of its (nonzero) digits is 124416, while the sum is 48.

The spelling of 18908180139 in words is "eighteen billion, nine hundred eight million, one hundred eighty thousand, one hundred thirty-nine".