18910448153 has 8 divisors (see below), whose sum is σ = 18999154272. Its totient is φ = 18821789856.

The previous prime is 18910448129. The next prime is 18910448191. The reversal of 18910448153 is 35184401981.

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 18910448153 - 2¹² = 18910444057 is a prime.

It is a super-3 number, since 3×18910448153³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18910448653) 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, 965726 + ... + 985112.

It is an arithmetic number, because the mean of its divisors is an integer number (2374894284).

Almost surely, 2^18910448153 is an apocalyptic number.

It is an amenable number.

18910448153 is a deficient number, since it is larger than the sum of its proper divisors (88706119).

18910448153 is a wasteful number, since it uses less digits than its factorization.

18910448153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23911.

The product of its (nonzero) digits is 138240, while the sum is 44.

The spelling of 18910448153 in words is "eighteen billion, nine hundred ten million, four hundred forty-eight thousand, one hundred fifty-three".