1291464629 has 32 divisors (see below), whose sum is σ = 1649760000. Its totient is φ = 1004294592.

The previous prime is 1291464589. The next prime is 1291464631. The reversal of 1291464629 is 9264641921.

It is a de Polignac number, because none of the positive numbers 2^k-1291464629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1291464629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1291464659) 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 31 ways as a sum of consecutive naturals, for example, 260627 + ... + 265535.

It is an arithmetic number, because the mean of its divisors is an integer number (51555000).

Almost surely, 2^1291464629 is an apocalyptic number.

It is an amenable number.

1291464629 is a deficient number, since it is larger than the sum of its proper divisors (358295371).

1291464629 is an equidigital number, since it uses as much as digits as its factorization.

1291464629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5002 (or 4988 counting only the distinct ones).

The product of its digits is 186624, while the sum is 44.

The square root of 1291464629 is about 35936.9535297582. The cubic root of 1291464629 is about 1088.9990612070. Note that the first 3 decimals are identical.

The spelling of 1291464629 in words is "one billion, two hundred ninety-one million, four hundred sixty-four thousand, six hundred twenty-nine".