918330047 has 8 divisors (see below), whose sum is σ = 944158032. Its totient is φ = 892555200.

The previous prime is 918330031. The next prime is 918330053. The reversal of 918330047 is 740033819.

It is a Cunningham number, because it is equal to 972³-1.

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 918330047 - 2⁴ = 918330031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 918329989 and 918330016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (914330047) 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, 23147 + ... + 48707.

It is an arithmetic number, because the mean of its divisors is an integer number (118019754).

Almost surely, 2^918330047 is an apocalyptic number.

918330047 is a deficient number, since it is larger than the sum of its proper divisors (25827985).

918330047 is a wasteful number, since it uses less digits than its factorization.

918330047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26569.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 918330047 is about 30303.9609127256. The cubic root of 918330047 is about 971.9999996472. Note that the first 6 decimals are identical.

The spelling of 918330047 in words is "nine hundred eighteen million, three hundred thirty thousand, forty-seven".