918445212 has 36 divisors (see below), whose sum is σ = 2360980440. Its totient is φ = 300958752.

The previous prime is 918445211. The next prime is 918445243. The reversal of 918445212 is 212544819.

918445212 is a `hidden beast` number, since 91 + 8 + 44 + 521 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (918445211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 214083 + ... + 218330.

It is an arithmetic number, because the mean of its divisors is an integer number (65582790).

Almost surely, 2^918445212 is an apocalyptic number.

It is an amenable number.

918445212 is an abundant number, since it is smaller than the sum of its proper divisors (1442535228).

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

918445212 is a wasteful number, since it uses less digits than its factorization.

918445212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432482 (or 432477 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 918445212 is about 30305.8610173016. The cubic root of 918445212 is about 972.0406298111.

The spelling of 918445212 in words is "nine hundred eighteen million, four hundred forty-five thousand, two hundred twelve".