1334564865 has 12 divisors (see below), whose sum is σ = 2313245844. Its totient is φ = 711767904.

The previous prime is 1334564851. The next prime is 1334564867. The reversal of 1334564865 is 5684654331.

1334564865 is a `hidden beast` number, since 1 + 3 + 3 + 4 + 564 + 86 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 864889281 + 469675584 = 29409^2 + 21672^2 .

It is not a de Polignac number, because 1334564865 - 2¹² = 1334560769 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 29656997 = 1334564865 / (1 + 3 + 3 + 4 + 5 + 6 + 4 + 8 + 6 + 5).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1334564865.

It is not an unprimeable number, because it can be changed into a prime (1334564867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14828454 + ... + 14828543.

It is an arithmetic number, because the mean of its divisors is an integer number (192770487).

Almost surely, 2^1334564865 is an apocalyptic number.

1334564865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1334564865 is a deficient number, since it is larger than the sum of its proper divisors (978680979).

1334564865 is a wasteful number, since it uses less digits than its factorization.

1334564865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29657008 (or 29657005 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 45.

The square root of 1334564865 is about 36531.6967166870. The cubic root of 1334564865 is about 1100.9811810171.

It can be divided in two parts, 13345 and 64865, that added together give a triangular number (78210 = T₃₉₅).

The spelling of 1334564865 in words is "one billion, three hundred thirty-four million, five hundred sixty-four thousand, eight hundred sixty-five".