18410912985 has 8 divisors (see below), whose sum is σ = 29457460800. Its totient is φ = 9819153584.

The previous prime is 18410912959. The next prime is 18410913029. The reversal of 18410912985 is 58921901481.

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 18410912985 - 2⁵ = 18410912953 is a prime.

It is a super-2 number, since 2×18410912985² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 613697085 + ... + 613697114.

It is an arithmetic number, because the mean of its divisors is an integer number (3682182600).

Almost surely, 2^18410912985 is an apocalyptic number.

18410912985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18410912985 is a deficient number, since it is larger than the sum of its proper divisors (11046547815).

18410912985 is a wasteful number, since it uses less digits than its factorization.

18410912985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227394207.

The product of its (nonzero) digits is 207360, while the sum is 48.

The spelling of 18410912985 in words is "eighteen billion, four hundred ten million, nine hundred twelve thousand, nine hundred eighty-five".