1290611768 has 8 divisors (see below), whose sum is σ = 2419897080. Its totient is φ = 645305880.

The previous prime is 1290611753. The next prime is 1290611771. The reversal of 1290611768 is 8671160921.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80663228 + ... + 80663243.

It is an arithmetic number, because the mean of its divisors is an integer number (302487135).

Almost surely, 2^1290611768 is an apocalyptic number.

It is an amenable number.

1290611768 is a deficient number, since it is larger than the sum of its proper divisors (1129285312).

1290611768 is a wasteful number, since it uses less digits than its factorization.

1290611768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161326477 (or 161326473 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 1290611768 is about 35925.0854974626. The cubic root of 1290611768 is about 1088.7592896770.

The spelling of 1290611768 in words is "one billion, two hundred ninety million, six hundred eleven thousand, seven hundred sixty-eight".