1045523865 has 8 divisors (see below), whose sum is σ = 1672838208. Its totient is φ = 557612720.

The previous prime is 1045523861. The next prime is 1045523873. The reversal of 1045523865 is 5683255401.

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

It is not a de Polignac number, because 1045523865 - 2² = 1045523861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1045523861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34850781 + ... + 34850810.

It is an arithmetic number, because the mean of its divisors is an integer number (209104776).

Almost surely, 2^1045523865 is an apocalyptic number.

1045523865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1045523865 is a deficient number, since it is larger than the sum of its proper divisors (627314343).

1045523865 is an equidigital number, since it uses as much as digits as its factorization.

1045523865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69701599.

The product of its (nonzero) digits is 144000, while the sum is 39.

The square root of 1045523865 is about 32334.5614629300. The cubic root of 1045523865 is about 1014.9500052219.

The spelling of 1045523865 in words is "one billion, forty-five million, five hundred twenty-three thousand, eight hundred sixty-five".