918212890626 has 96 divisors (see below), whose sum is σ = 2183160504000. Its totient is φ = 285993690624.

The previous prime is 918212890571. The next prime is 918212890627. The reversal of 918212890626 is 626098212819.

It is a happy number.

918212890626 is a `hidden beast` number, since 9 + 1 + 8 + 2 + 1 + 2 + 8 + 9 + 0 + 626 = 666.

It is a super-2 number, since 2×918212890626² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) 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 (54).

It is not an unprimeable number, because it can be changed into a prime (918212890627) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1957590 + ... + 2380878.

It is an arithmetic number, because the mean of its divisors is an integer number (22741255250).

Almost surely, 2^918212890626 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 918212890626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1091580252000).

918212890626 is an abundant number, since it is smaller than the sum of its proper divisors (1264947613374).

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

918212890626 is a wasteful number, since it uses less digits than its factorization.

918212890626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423473 (or 423450 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The spelling of 918212890626 in words is "nine hundred eighteen billion, two hundred twelve million, eight hundred ninety thousand, six hundred twenty-six".