1078344865 has 32 divisors (see below), whose sum is σ = 1417489920. Its totient is φ = 782735616.

The previous prime is 1078344863. The next prime is 1078344871. The reversal of 1078344865 is 5684438701.

It is a happy number.

It is not a de Polignac number, because 1078344865 - 2¹ = 1078344863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1078344863) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1915074 + ... + 1915636.

It is an arithmetic number, because the mean of its divisors is an integer number (44296560).

Almost surely, 2^1078344865 is an apocalyptic number.

It is an amenable number.

1078344865 is a deficient number, since it is larger than the sum of its proper divisors (339145055).

1078344865 is a wasteful number, since it uses less digits than its factorization.

1078344865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033.

The product of its (nonzero) digits is 645120, while the sum is 46.

The square root of 1078344865 is about 32838.1617177332. The cubic root of 1078344865 is about 1025.4611813240.

The spelling of 1078344865 in words is "one billion, seventy-eight million, three hundred forty-four thousand, eight hundred sixty-five".