1291446968 has 16 divisors (see below), whose sum is σ = 2767386480. Its totient is φ = 553477248.

The previous prime is 1291446931. The next prime is 1291446991. The reversal of 1291446968 is 8696441921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11530721 + ... + 11530832.

It is an arithmetic number, because the mean of its divisors is an integer number (172961655).

Almost surely, 2^1291446968 is an apocalyptic number.

It is an amenable number.

1291446968 is an abundant number, since it is smaller than the sum of its proper divisors (1475939512).

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

1291446968 is a wasteful number, since it uses less digits than its factorization.

1291446968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23061566 (or 23061562 counting only the distinct ones).

The product of its digits is 746496, while the sum is 50.

The square root of 1291446968 is about 35936.7078069208. The cubic root of 1291446968 is about 1088.9940971015.

The spelling of 1291446968 in words is "one billion, two hundred ninety-one million, four hundred forty-six thousand, nine hundred sixty-eight".