918213133 has 16 divisors (see below), whose sum is σ = 976518400. Its totient is φ = 860958720.

The previous prime is 918213097. The next prime is 918213143. The reversal of 918213133 is 331312819.

It is a cyclic number.

It is not a de Polignac number, because 918213133 - 2¹³ = 918204941 is a prime.

It is a super-2 number, since 2×918213133² = 1686230715227351378, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 918213095 and 918213104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (918213143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 883228 + ... + 884266.

It is an arithmetic number, because the mean of its divisors is an integer number (61032400).

Almost surely, 2^918213133 is an apocalyptic number.

It is an amenable number.

918213133 is a deficient number, since it is larger than the sum of its proper divisors (58305267).

918213133 is a wasteful number, since it uses less digits than its factorization.

918213133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492.

The product of its digits is 3888, while the sum is 31.

The square root of 918213133 is about 30302.0318295655. The cubic root of 918213133 is about 971.9587489620.

The spelling of 918213133 in words is "nine hundred eighteen million, two hundred thirteen thousand, one hundred thirty-three".