918946709 has 8 divisors (see below), whose sum is σ = 928205568. Its totient is φ = 909700480.

The previous prime is 918946697. The next prime is 918946711. The reversal of 918946709 is 907649819.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 918946709 - 2²⁰ = 917898133 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 (918946789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220604 + ... + 224730.

It is an arithmetic number, because the mean of its divisors is an integer number (116025696).

Almost surely, 2^918946709 is an apocalyptic number.

It is an amenable number.

918946709 is a deficient number, since it is larger than the sum of its proper divisors (9258859).

918946709 is a wasteful number, since it uses less digits than its factorization.

918946709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6315.

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

The square root of 918946709 is about 30314.1338157632. The cubic root of 918946709 is about 972.2175181564.

The spelling of 918946709 in words is "nine hundred eighteen million, nine hundred forty-six thousand, seven hundred nine".