1271696458 has 16 divisors (see below), whose sum is σ = 2089401480. Its totient is φ = 577808896.

The previous prime is 1271696453. The next prime is 1271696479. The reversal of 1271696458 is 8546961721.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 879537649 + 392158809 = 29657^2 + 19803^2 .

It is not an unprimeable number, because it can be changed into a prime (1271696453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 643891 + ... + 645862.

Almost surely, 2^1271696458 is an apocalyptic number.

1271696458 is a deficient number, since it is larger than the sum of its proper divisors (817705022).

1271696458 is a wasteful number, since it uses less digits than its factorization.

1271696458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289801.

The product of its digits is 725760, while the sum is 49.

The square root of 1271696458 is about 35660.8532988205. The cubic root of 1271696458 is about 1083.4141095956.

The spelling of 1271696458 in words is "one billion, two hundred seventy-one million, six hundred ninety-six thousand, four hundred fifty-eight".