1994068709 has 4 divisors (see below), whose sum is σ = 1994600160. Its totient is φ = 1993537260.

The previous prime is 1994068693. The next prime is 1994068721. The reversal of 1994068709 is 9078604991.

It is a happy number.

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 1994068709 - 2⁴ = 1994068693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994062709) 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, 260057 + ... + 267614.

It is an arithmetic number, because the mean of its divisors is an integer number (498650040).

Almost surely, 2^1994068709 is an apocalyptic number.

It is an amenable number.

1994068709 is a deficient number, since it is larger than the sum of its proper divisors (531451).

1994068709 is an equidigital number, since it uses as much as digits as its factorization.

1994068709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531450.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 1994068709 is about 44654.9964617623. The cubic root of 1994068709 is about 1258.6743235680.

The spelling of 1994068709 in words is "one billion, nine hundred ninety-four million, sixty-eight thousand, seven hundred nine".