1293078056 has 16 divisors (see below), whose sum is σ = 2436831540. Its totient is φ = 643256320.

The previous prime is 1293078037. The next prime is 1293078103. The reversal of 1293078056 is 6508703921.

It can be written as a sum of positive squares in 2 ways, for example, as 1286656900 + 6421156 = 35870^2 + 2534^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408665 + ... + 411816.

Almost surely, 2^1293078056 is an apocalyptic number.

It is an amenable number.

1293078056 is a deficient number, since it is larger than the sum of its proper divisors (1143753484).

1293078056 is a wasteful number, since it uses less digits than its factorization.

1293078056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820684 (or 820680 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 1293078056 is about 35959.3945444024. The cubic root of 1293078056 is about 1089.4523680635.

The spelling of 1293078056 in words is "one billion, two hundred ninety-three million, seventy-eight thousand, fifty-six".