815441465 has 16 divisors (see below), whose sum is σ = 1060190208. Its totient is φ = 599698176.

The previous prime is 815441447. The next prime is 815441467. The reversal of 815441465 is 564144518.

It is a cyclic number.

It is not a de Polignac number, because 815441465 - 2²⁰ = 814392889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (815441467) 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, 107897 + ... + 115206.

It is an arithmetic number, because the mean of its divisors is an integer number (66261888).

Almost surely, 2^815441465 is an apocalyptic number.

815441465 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

815441465 is a deficient number, since it is larger than the sum of its proper divisors (244748743).

815441465 is a wasteful number, since it uses less digits than its factorization.

815441465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223168.

The product of its digits is 76800, while the sum is 38.

The square root of 815441465 is about 28555.9357227180. The cubic root of 815441465 is about 934.2524895622.

The spelling of 815441465 in words is "eight hundred fifteen million, four hundred forty-one thousand, four hundred sixty-five".