2117698043 has 4 divisors (see below), whose sum is σ = 2147524848. Its totient is φ = 2087871240.

The previous prime is 2117698019. The next prime is 2117698057. The reversal of 2117698043 is 3408967112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2117698043 - 2⁸ = 2117697787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2117698943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14913296 + ... + 14913437.

It is an arithmetic number, because the mean of its divisors is an integer number (536881212).

Almost surely, 2^2117698043 is an apocalyptic number.

2117698043 is a deficient number, since it is larger than the sum of its proper divisors (29826805).

2117698043 is an equidigital number, since it uses as much as digits as its factorization.

2117698043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29826804.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 2117698043 is about 46018.4532877845. The cubic root of 2117698043 is about 1284.1665259816.

The spelling of 2117698043 in words is "two billion, one hundred seventeen million, six hundred ninety-eight thousand, forty-three".