1718781968 has 10 divisors (see below), whose sum is σ = 3330140094. Its totient is φ = 859390976.

The previous prime is 1718781959. The next prime is 1718781989. The reversal of 1718781968 is 8691878171.

It can be written as a sum of positive squares in only one way, i.e., 1711642384 + 7139584 = 41372^2 + 2672^2 .

It is a super-2 number, since 2×1718781968² = 5908422907043906048, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53711921 + ... + 53711952.

Almost surely, 2^1718781968 is an apocalyptic number.

It is an amenable number.

1718781968 is a deficient number, since it is larger than the sum of its proper divisors (1611358126).

1718781968 is a wasteful number, since it uses less digits than its factorization.

1718781968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107423881 (or 107423875 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 56.

The square root of 1718781968 is about 41458.1954262363. The cubic root of 1718781968 is about 1197.8623907462.

The spelling of 1718781968 in words is "one billion, seven hundred eighteen million, seven hundred eighty-one thousand, nine hundred sixty-eight".