918374243 has 4 divisors (see below), whose sum is σ = 918484680. Its totient is φ = 918263808.

The previous prime is 918374227. The next prime is 918374257. The reversal of 918374243 is 342473819.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 918374243 - 2⁴ = 918374227 is a prime.

It is a super-2 number, since 2×918374243² = 1686822500411646098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 918374243.

It is not an unprimeable number, because it can be changed into a prime (918374203) 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, 41630 + ... + 59747.

It is an arithmetic number, because the mean of its divisors is an integer number (229621170).

Almost surely, 2^918374243 is an apocalyptic number.

918374243 is a deficient number, since it is larger than the sum of its proper divisors (110437).

918374243 is a wasteful number, since it uses less digits than its factorization.

918374243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110436.

The product of its digits is 145152, while the sum is 41.

The square root of 918374243 is about 30304.6901155580. The cubic root of 918374243 is about 972.0155923792.

The spelling of 918374243 in words is "nine hundred eighteen million, three hundred seventy-four thousand, two hundred forty-three".