918273132 has 144 divisors (see below), whose sum is σ = 2808513120. Its totient is φ = 258660864.

The previous prime is 918273089. The next prime is 918273149. The reversal of 918273132 is 231372819.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 385128 + ... + 387504.

Almost surely, 2^918273132 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 918273132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1404256560).

918273132 is an abundant number, since it is smaller than the sum of its proper divisors (1890239988).

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

918273132 is a wasteful number, since it uses less digits than its factorization.

918273132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477 (or 2462 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 918273132 is about 30303.0218295140. The cubic root of 918273132 is about 971.9799188048.

The spelling of 918273132 in words is "nine hundred eighteen million, two hundred seventy-three thousand, one hundred thirty-two".