2168942417 has 4 divisors (see below), whose sum is σ = 2215090176. Its totient is φ = 2122794660.

The previous prime is 2168942411. The next prime is 2168942429. The reversal of 2168942417 is 7142498612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2168942417 - 2¹⁴ = 2168926033 is a prime.

It is a super-2 number, since 2×2168942417² = 9408622416523603778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2168942411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23073809 + ... + 23073902.

It is an arithmetic number, because the mean of its divisors is an integer number (553772544).

Almost surely, 2^2168942417 is an apocalyptic number.

It is an amenable number.

2168942417 is a deficient number, since it is larger than the sum of its proper divisors (46147759).

2168942417 is an equidigital number, since it uses as much as digits as its factorization.

2168942417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46147758.

The product of its digits is 193536, while the sum is 44.

The square root of 2168942417 is about 46571.9058768266. The cubic root of 2168942417 is about 1294.4422332276.

The spelling of 2168942417 in words is "two billion, one hundred sixty-eight million, nine hundred forty-two thousand, four hundred seventeen".