1291043514 has 16 divisors (see below), whose sum is σ = 2601799200. Its totient is φ = 427062480.

The previous prime is 1291043513. The next prime is 1291043549. The reversal of 1291043514 is 4153401921.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1291043513) 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 7 ways as a sum of consecutive naturals, for example, 820489 + ... + 822060.

It is an arithmetic number, because the mean of its divisors is an integer number (162612450).

Almost surely, 2^1291043514 is an apocalyptic number.

1291043514 is an abundant number, since it is smaller than the sum of its proper divisors (1310755686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1291043514 is a wasteful number, since it uses less digits than its factorization.

1291043514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642685.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1291043514 is about 35931.0939716564. The cubic root of 1291043514 is about 1088.8806830278.

The spelling of 1291043514 in words is "one billion, two hundred ninety-one million, forty-three thousand, five hundred fourteen".