1288078641 has 12 divisors (see below), whose sum is σ = 1860872832. Its totient is φ = 858573816.

The previous prime is 1288078633. The next prime is 1288078681. The reversal of 1288078641 is 1468708821.

It is not a de Polignac number, because 1288078641 - 2³ = 1288078633 is a prime.

It is a super-3 number, since 3×1288078641³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1288078601) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 85240 + ... + 99206.

It is an arithmetic number, because the mean of its divisors is an integer number (155072736).

Almost surely, 2^1288078641 is an apocalyptic number.

It is an amenable number.

1288078641 is a deficient number, since it is larger than the sum of its proper divisors (572794191).

1288078641 is a wasteful number, since it uses less digits than its factorization.

1288078641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24220 (or 24217 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The square root of 1288078641 is about 35889.8124960273. The cubic root of 1288078641 is about 1088.0465083497.

The spelling of 1288078641 in words is "one billion, two hundred eighty-eight million, seventy-eight thousand, six hundred forty-one".