1290729116 has 12 divisors (see below), whose sum is σ = 2259531120. Its totient is φ = 645148800.

The previous prime is 1290729031. The next prime is 1290729169. The reversal of 1290729116 is 6119270921.

It is a super-4 number, since 4×1290729116⁴ (a number of 38 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1290729116.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 40085 + ... + 64716.

It is an arithmetic number, because the mean of its divisors is an integer number (188294260).

Almost surely, 2^1290729116 is an apocalyptic number.

It is an amenable number.

1290729116 is a deficient number, since it is larger than the sum of its proper divisors (968802004).

1290729116 is a wasteful number, since it uses less digits than its factorization.

1290729116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107884 (or 107882 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 1290729116 is about 35926.7186923604. The cubic root of 1290729116 is about 1088.7922869104.

The spelling of 1290729116 in words is "one billion, two hundred ninety million, seven hundred twenty-nine thousand, one hundred sixteen".