1291071352 has 16 divisors (see below), whose sum is σ = 2422550160. Its totient is φ = 645057984.

The previous prime is 1291071349. The next prime is 1291071373. The reversal of 1291071352 is 2531701921.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 48093 + ... + 69964.

It is an arithmetic number, because the mean of its divisors is an integer number (151409385).

Almost surely, 2^1291071352 is an apocalyptic number.

It is an amenable number.

1291071352 is a deficient number, since it is larger than the sum of its proper divisors (1131478808).

1291071352 is a wasteful number, since it uses less digits than its factorization.

1291071352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119430 (or 119426 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 1291071352 is about 35931.4813499249. The cubic root of 1291071352 is about 1088.8885092661. Note that the first 3 decimals are identical.

The spelling of 1291071352 in words is "one billion, two hundred ninety-one million, seventy-one thousand, three hundred fifty-two".