1271491088 has 40 divisors (see below), whose sum is σ = 2891547072. Its totient is φ = 530195328.

The previous prime is 1271491061. The next prime is 1271491099. The reversal of 1271491088 is 8801941721.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149270 + ... + 157557.

Almost surely, 2^1271491088 is an apocalyptic number.

It is an amenable number.

1271491088 is an abundant number, since it is smaller than the sum of its proper divisors (1620055984).

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

1271491088 is a wasteful number, since it uses less digits than its factorization.

1271491088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306879 (or 306873 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 41.

The square root of 1271491088 is about 35657.9736945329. The cubic root of 1271491088 is about 1083.3557852125.

The spelling of 1271491088 in words is "one billion, two hundred seventy-one million, four hundred ninety-one thousand, eighty-eight".