1968549995 has 8 divisors (see below), whose sum is σ = 2377307184. Its totient is φ = 1564808544.

The previous prime is 1968549983. The next prime is 1968549997. The reversal of 1968549995 is 5999458691.

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 1968549995 - 2¹² = 1968545899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1968549997) 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, 1253069 + ... + 1254638.

It is an arithmetic number, because the mean of its divisors is an integer number (297163398).

Almost surely, 2^1968549995 is an apocalyptic number.

1968549995 is a deficient number, since it is larger than the sum of its proper divisors (408757189).

1968549995 is a wasteful number, since it uses less digits than its factorization.

1968549995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2507869.

The product of its digits is 31492800, while the sum is 65.

The square root of 1968549995 is about 44368.3445149805. The cubic root of 1968549995 is about 1253.2820406254.

The spelling of 1968549995 in words is "one billion, nine hundred sixty-eight million, five hundred forty-nine thousand, nine hundred ninety-five".