2117388747 has 16 divisors (see below), whose sum is σ = 2976336000. Its totient is φ = 1335245184.

The previous prime is 2117388733. The next prime is 2117388761. The reversal of 2117388747 is 7478837112.

It is an interprime number because it is at equal distance from previous prime (2117388733) and next prime (2117388761).

It is not a de Polignac number, because 2117388747 - 2⁶ = 2117388683 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2117388696 and 2117388705.

It is not an unprimeable number, because it can be changed into a prime (2117388727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9379 + ... + 65747.

It is an arithmetic number, because the mean of its divisors is an integer number (186021000).

Almost surely, 2^2117388747 is an apocalyptic number.

2117388747 is a deficient number, since it is larger than the sum of its proper divisors (858947253).

2117388747 is a wasteful number, since it uses less digits than its factorization.

2117388747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57050.

The product of its digits is 526848, while the sum is 48.

The square root of 2117388747 is about 46015.0926001459. The cubic root of 2117388747 is about 1284.1040041772.

The spelling of 2117388747 in words is "two billion, one hundred seventeen million, three hundred eighty-eight thousand, seven hundred forty-seven".