18934773135 has 32 divisors (see below), whose sum is σ = 31319386560. Its totient is φ = 9761817600.

The previous prime is 18934773127. The next prime is 18934773139. The reversal of 18934773135 is 53137743981.

It is a happy number.

It is not a de Polignac number, because 18934773135 - 2³ = 18934773127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18934773139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74196 + ... + 208265.

It is an arithmetic number, because the mean of its divisors is an integer number (978730830).

Almost surely, 2^18934773135 is an apocalyptic number.

18934773135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18934773135 is a deficient number, since it is larger than the sum of its proper divisors (12384613425).

18934773135 is a wasteful number, since it uses less digits than its factorization.

18934773135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282619.

The product of its digits is 1905120, while the sum is 51.

The spelling of 18934773135 in words is "eighteen billion, nine hundred thirty-four million, seven hundred seventy-three thousand, one hundred thirty-five".