18906001123 has 8 divisors (see below), whose sum is σ = 19230773760. Its totient is φ = 18581373000.

The previous prime is 18906001067. The next prime is 18906001157. The reversal of 18906001123 is 32110060981.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18906001123 is a prime.

It is a super-2 number, since 2×18906001123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18906001423) 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, 246586 + ... + 314032.

It is an arithmetic number, because the mean of its divisors is an integer number (2403846720).

Almost surely, 2^18906001123 is an apocalyptic number.

18906001123 is a deficient number, since it is larger than the sum of its proper divisors (324772637).

18906001123 is an equidigital number, since it uses as much as digits as its factorization.

18906001123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72257.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 18906001123 in words is "eighteen billion, nine hundred six million, one thousand, one hundred twenty-three".