8918398945 has 8 divisors (see below), whose sum is σ = 10702601280. Its totient is φ = 7134370800.

The previous prime is 8918398919. The next prime is 8918398967. The reversal of 8918398945 is 5498938198.

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

It is a de Polignac number, because none of the positive numbers 2^k-8918398945 is a prime.

It is a super-2 number, since 2×8918398945² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137620 + ... + 191770.

It is an arithmetic number, because the mean of its divisors is an integer number (1337825160).

Almost surely, 2^8918398945 is an apocalyptic number.

It is an amenable number.

8918398945 is a deficient number, since it is larger than the sum of its proper divisors (1784202335).

8918398945 is a wasteful number, since it uses less digits than its factorization.

8918398945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87095.

The product of its digits is 22394880, while the sum is 64.

The square root of 8918398945 is about 94437.2751883492. The cubic root of 8918398945 is about 2073.7781703177.

The spelling of 8918398945 in words is "eight billion, nine hundred eighteen million, three hundred ninety-eight thousand, nine hundred forty-five".