815530465 has 8 divisors (see below), whose sum is σ = 978793920. Its totient is φ = 652319472.

The previous prime is 815530453. The next prime is 815530493. The reversal of 815530465 is 564035518.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 815530465 - 2¹³ = 815522273 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42652 + ... + 58738.

It is an arithmetic number, because the mean of its divisors is an integer number (122349240).

Almost surely, 2^815530465 is an apocalyptic number.

It is an amenable number.

815530465 is a deficient number, since it is larger than the sum of its proper divisors (163263455).

815530465 is a wasteful number, since it uses less digits than its factorization.

815530465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26231.

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 815530465 is about 28557.4940252117. The cubic root of 815530465 is about 934.2864774695.

The spelling of 815530465 in words is "eight hundred fifteen million, five hundred thirty thousand, four hundred sixty-five".