1291260293 has 8 divisors (see below), whose sum is σ = 1352697600. Its totient is φ = 1230950448.

The previous prime is 1291260283. The next prime is 1291260307. The reversal of 1291260293 is 3920621921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1291260293 - 2¹⁰ = 1291259269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1291260203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279521 + ... + 284102.

It is an arithmetic number, because the mean of its divisors is an integer number (169087200).

Almost surely, 2^1291260293 is an apocalyptic number.

It is an amenable number.

1291260293 is a deficient number, since it is larger than the sum of its proper divisors (61437307).

1291260293 is an equidigital number, since it uses as much as digits as its factorization.

1291260293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563731.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 1291260293 is about 35934.1104384121. The cubic root of 1291260293 is about 1088.9416242361.

The spelling of 1291260293 in words is "one billion, two hundred ninety-one million, two hundred sixty thousand, two hundred ninety-three".