918868434 has 96 divisors (see below), whose sum is σ = 2105698560. Its totient is φ = 266872320.

The previous prime is 918868417. The next prime is 918868441. The reversal of 918868434 is 434868819.

918868434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×918868434² = 1688638398003224712, which contains 22 as substring.

Its product of digits (1327104) is a multiple of the sum of its prime factors (576).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2121882 + ... + 2122314.

It is an arithmetic number, because the mean of its divisors is an integer number (21934360).

Almost surely, 2^918868434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 918868434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1052849280).

918868434 is an abundant number, since it is smaller than the sum of its proper divisors (1186830126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

918868434 is a wasteful number, since it uses less digits than its factorization.

918868434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576 (or 565 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 51.

The square root of 918868434 is about 30312.8427238357. The cubic root of 918868434 is about 972.1899131871.

The spelling of 918868434 in words is "nine hundred eighteen million, eight hundred sixty-eight thousand, four hundred thirty-four".