1045405865 has 8 divisors (see below), whose sum is σ = 1433699520. Its totient is φ = 716849712.

The previous prime is 1045405843. The next prime is 1045405873. The reversal of 1045405865 is 5685045401.

It is a happy number.

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 1045405865 - 2⁸ = 1045405609 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14934335 + ... + 14934404.

It is an arithmetic number, because the mean of its divisors is an integer number (179212440).

Almost surely, 2^1045405865 is an apocalyptic number.

It is an amenable number.

1045405865 is a deficient number, since it is larger than the sum of its proper divisors (388293655).

1045405865 is an equidigital number, since it uses as much as digits as its factorization.

1045405865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29868751.

The product of its (nonzero) digits is 96000, while the sum is 38.

The square root of 1045405865 is about 32332.7367384823. The cubic root of 1045405865 is about 1014.9118206618.

The spelling of 1045405865 in words is "one billion, forty-five million, four hundred five thousand, eight hundred sixty-five".