1968911445 has 8 divisors (see below), whose sum is σ = 3150258336. Its totient is φ = 1050086096.

The previous prime is 1968911431. The next prime is 1968911449. The reversal of 1968911445 is 5441198691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1968911445 - 2⁶ = 1968911381 is a prime.

It is a super-2 number, since 2×1968911445² = 7753224556503976050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1968911394 and 1968911403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968911449) by changing a digit.

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, 65630367 + ... + 65630396.

It is an arithmetic number, because the mean of its divisors is an integer number (393782292).

Almost surely, 2^1968911445 is an apocalyptic number.

1968911445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1968911445 is a deficient number, since it is larger than the sum of its proper divisors (1181346891).

1968911445 is a wasteful number, since it uses less digits than its factorization.

1968911445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131260771.

The product of its digits is 311040, while the sum is 48.

The square root of 1968911445 is about 44372.4176150004. The cubic root of 1968911445 is about 1253.3587419321.

The spelling of 1968911445 in words is "one billion, nine hundred sixty-eight million, nine hundred eleven thousand, four hundred forty-five".