18978483135 has 16 divisors (see below), whose sum is σ = 30407823360. Its totient is φ = 10107774240.

The previous prime is 18978483119. The next prime is 18978483157. The reversal of 18978483135 is 53138487981.

It is a happy number.

It is not a de Polignac number, because 18978483135 - 2⁴ = 18978483119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 869071 + ... + 890640.

It is an arithmetic number, because the mean of its divisors is an integer number (1900488960).

Almost surely, 2^18978483135 is an apocalyptic number.

18978483135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18978483135 is a deficient number, since it is larger than the sum of its proper divisors (11429340225).

18978483135 is a wasteful number, since it uses less digits than its factorization.

18978483135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760438.

The product of its digits is 5806080, while the sum is 57.

The spelling of 18978483135 in words is "eighteen billion, nine hundred seventy-eight million, four hundred eighty-three thousand, one hundred thirty-five".