18158017129 has 8 divisors (see below), whose sum is σ = 20764929920. Its totient is φ = 15554331936.

The previous prime is 18158017123. The next prime is 18158017133. The reversal of 18158017129 is 92171085181.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18158017129 - 2⁷ = 18158017001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18158017123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 794829 + ... + 817354.

It is an arithmetic number, because the mean of its divisors is an integer number (2595616240).

Almost surely, 2^18158017129 is an apocalyptic number.

It is an amenable number.

18158017129 is a deficient number, since it is larger than the sum of its proper divisors (2606912791).

18158017129 is a wasteful number, since it uses less digits than its factorization.

18158017129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613799.

The product of its (nonzero) digits is 40320, while the sum is 43.

The spelling of 18158017129 in words is "eighteen billion, one hundred fifty-eight million, seventeen thousand, one hundred twenty-nine".