918381276 has 72 divisors (see below), whose sum is σ = 2468007360. Its totient is φ = 286949376.

The previous prime is 918381271. The next prime is 918381307. The reversal of 918381276 is 672183819.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (918381271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154365 + ... + 160203.

It is an arithmetic number, because the mean of its divisors is an integer number (34277880).

Almost surely, 2^918381276 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 918381276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1234003680).

918381276 is an abundant number, since it is smaller than the sum of its proper divisors (1549626084).

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

918381276 is a wasteful number, since it uses less digits than its factorization.

918381276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6123 (or 6118 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 918381276 is about 30304.8061534800. The cubic root of 918381276 is about 972.0180736364.

The spelling of 918381276 in words is "nine hundred eighteen million, three hundred eighty-one thousand, two hundred seventy-six".