1271968718 has 16 divisors (see below), whose sum is σ = 2018578320. Its totient is φ = 599449536.

The previous prime is 1271968703. The next prime is 1271968723. The reversal of 1271968718 is 8178691721.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77471 + ... + 92442.

It is an arithmetic number, because the mean of its divisors is an integer number (126161145).

Almost surely, 2^1271968718 is an apocalyptic number.

1271968718 is a deficient number, since it is larger than the sum of its proper divisors (746609602).

1271968718 is a wasteful number, since it uses less digits than its factorization.

1271968718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170131.

The product of its digits is 338688, while the sum is 50.

The square root of 1271968718 is about 35664.6704456946. The cubic root of 1271968718 is about 1083.4914208324.

The spelling of 1271968718 in words is "one billion, two hundred seventy-one million, nine hundred sixty-eight thousand, seven hundred eighteen".