2117538834 has 16 divisors (see below), whose sum is σ = 4244230272. Its totient is φ = 704320848.

The previous prime is 2117538821. The next prime is 2117538869. The reversal of 2117538834 is 4388357112.

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, 378349 + ... + 383904.

It is an arithmetic number, because the mean of its divisors is an integer number (265264392).

Almost surely, 2^2117538834 is an apocalyptic number.

2117538834 is an abundant number, since it is smaller than the sum of its proper divisors (2126691438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2117538834 is a wasteful number, since it uses less digits than its factorization.

2117538834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762721.

The product of its digits is 161280, while the sum is 42.

The square root of 2117538834 is about 46016.7234166015. The cubic root of 2117538834 is about 1284.1343438687.

The spelling of 2117538834 in words is "two billion, one hundred seventeen million, five hundred thirty-eight thousand, eight hundred thirty-four".