18838251105 has 8 divisors (see below), whose sum is σ = 30141201792. Its totient is φ = 10047067248.

The previous prime is 18838251067. The next prime is 18838251137. The reversal of 18838251105 is 50115283881.

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

It is not a de Polignac number, because 18838251105 - 2⁶ = 18838251041 is a prime.

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, 627941689 + ... + 627941718.

It is an arithmetic number, because the mean of its divisors is an integer number (3767650224).

Almost surely, 2^18838251105 is an apocalyptic number.

18838251105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18838251105 is a deficient number, since it is larger than the sum of its proper divisors (11302950687).

18838251105 is a wasteful number, since it uses less digits than its factorization.

18838251105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255883415.

The product of its (nonzero) digits is 76800, while the sum is 42.

The spelling of 18838251105 in words is "eighteen billion, eight hundred thirty-eight million, two hundred fifty-one thousand, one hundred five".