1284437945 has 16 divisors (see below), whose sum is σ = 1762792320. Its totient is φ = 880118784.

The previous prime is 1284437939. The next prime is 1284437969. The reversal of 1284437945 is 5497344821.

It is a cyclic number.

It is not a de Polignac number, because 1284437945 - 2⁸ = 1284437689 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1284437945.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38489 + ... + 63641.

It is an arithmetic number, because the mean of its divisors is an integer number (110174520).

Almost surely, 2^1284437945 is an apocalyptic number.

It is an amenable number.

1284437945 is a deficient number, since it is larger than the sum of its proper divisors (478354375).

1284437945 is a wasteful number, since it uses less digits than its factorization.

1284437945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26624.

The product of its digits is 967680, while the sum is 47.

The square root of 1284437945 is about 35839.0561399153. The cubic root of 1284437945 is about 1087.0204362837.

The spelling of 1284437945 in words is "one billion, two hundred eighty-four million, four hundred thirty-seven thousand, nine hundred forty-five".