918216465 has 16 divisors (see below), whose sum is σ = 1533022848. Its totient is φ = 468423296.

The previous prime is 918216463. The next prime is 918216493. The reversal of 918216465 is 564612819.

It is a cyclic number.

It is not a de Polignac number, because 918216465 - 2¹ = 918216463 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (918216463) 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, 1330404 + ... + 1331093.

It is an arithmetic number, because the mean of its divisors is an integer number (95813928).

Almost surely, 2^918216465 is an apocalyptic number.

It is an amenable number.

918216465 is a deficient number, since it is larger than the sum of its proper divisors (614806383).

918216465 is a wasteful number, since it uses less digits than its factorization.

918216465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661528.

The product of its digits is 103680, while the sum is 42.

The square root of 918216465 is about 30302.0868093272. The cubic root of 918216465 is about 971.9599246378.

The spelling of 918216465 in words is "nine hundred eighteen million, two hundred sixteen thousand, four hundred sixty-five".