2117640046 has 4 divisors (see below), whose sum is σ = 3176460072. Its totient is φ = 1058820022.

The previous prime is 2117640029. The next prime is 2117640047. The reversal of 2117640046 is 6400467112.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2117640047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 529410010 + ... + 529410013.

It is an arithmetic number, because the mean of its divisors is an integer number (794115018).

Almost surely, 2^2117640046 is an apocalyptic number.

2117640046 is a deficient number, since it is larger than the sum of its proper divisors (1058820026).

2117640046 is a wasteful number, since it uses less digits than its factorization.

2117640046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058820025.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 2117640046 is about 46017.8231340858. The cubic root of 2117640046 is about 1284.1548027984.

The spelling of 2117640046 in words is "two billion, one hundred seventeen million, six hundred forty thousand, forty-six".