18158500229 has 8 divisors (see below), whose sum is σ = 18582603072. Its totient is φ = 17734479840.

The previous prime is 18158500159. The next prime is 18158500237. The reversal of 18158500229 is 92200585181.

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 18158500229 - 2¹² = 18158496133 is a prime.

It is a super-2 number, since 2×18158500229² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18158500429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 817784 + ... + 839694.

It is an arithmetic number, because the mean of its divisors is an integer number (2322825384).

Almost surely, 2^18158500229 is an apocalyptic number.

It is an amenable number.

18158500229 is a deficient number, since it is larger than the sum of its proper divisors (424102843).

18158500229 is a wasteful number, since it uses less digits than its factorization.

18158500229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41227.

The product of its (nonzero) digits is 57600, while the sum is 41.

The spelling of 18158500229 in words is "eighteen billion, one hundred fifty-eight million, five hundred thousand, two hundred twenty-nine".