1290116278 has 24 divisors (see below), whose sum is σ = 2128936320. Its totient is φ = 585908400.

The previous prime is 1290116273. The next prime is 1290116279. The reversal of 1290116278 is 8726110921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290116273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 540648 + ... + 543028.

It is an arithmetic number, because the mean of its divisors is an integer number (88705680).

Almost surely, 2^1290116278 is an apocalyptic number.

1290116278 is a deficient number, since it is larger than the sum of its proper divisors (838820042).

1290116278 is a wasteful number, since it uses less digits than its factorization.

1290116278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4644 (or 4633 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 1290116278 is about 35918.1886792750. The cubic root of 1290116278 is about 1088.6199401566.

The spelling of 1290116278 in words is "one billion, two hundred ninety million, one hundred sixteen thousand, two hundred seventy-eight".