1291088284 has 6 divisors (see below), whose sum is σ = 2259404504. Its totient is φ = 645544140.

The previous prime is 1291088269. The next prime is 1291088299. The reversal of 1291088284 is 4828801921.

It is an interprime number because it is at equal distance from previous prime (1291088269) and next prime (1291088299).

It is a self number, because there is not a number n which added to its sum of digits gives 1291088284.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161386032 + ... + 161386039.

Almost surely, 2^1291088284 is an apocalyptic number.

It is an amenable number.

1291088284 is a deficient number, since it is larger than the sum of its proper divisors (968316220).

1291088284 is a wasteful number, since it uses less digits than its factorization.

1291088284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322772075 (or 322772073 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 43.

The square root of 1291088284 is about 35931.7169642643. The cubic root of 1291088284 is about 1088.8932693902.

The spelling of 1291088284 in words is "one billion, two hundred ninety-one million, eighty-eight thousand, two hundred eighty-four".