1291291295 has 16 divisors (see below), whose sum is σ = 1773707328. Its totient is φ = 884060160.

The previous prime is 1291291291. The next prime is 1291291303. The reversal of 1291291295 is 5921921921.

It is not a de Polignac number, because 1291291295 - 2² = 1291291291 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 (1291291291) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6344 + ... + 51213.

It is an arithmetic number, because the mean of its divisors is an integer number (110856708).

Almost surely, 2^1291291295 is an apocalyptic number.

1291291295 is a deficient number, since it is larger than the sum of its proper divisors (482416033).

1291291295 is an equidigital number, since it uses as much as digits as its factorization.

1291291295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58210.

The product of its digits is 29160, while the sum is 41.

The square root of 1291291295 is about 35934.5418086832. The cubic root of 1291291295 is about 1088.9503390032.

The spelling of 1291291295 in words is "one billion, two hundred ninety-one million, two hundred ninety-one thousand, two hundred ninety-five".