1968243673 has 4 divisors (see below), whose sum is σ = 2147174928. Its totient is φ = 1789312420.

The previous prime is 1968243671. The next prime is 1968243677. The reversal of 1968243673 is 3763428691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1968243673 - 2¹ = 1968243671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1968243671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89465611 + ... + 89465632.

It is an arithmetic number, because the mean of its divisors is an integer number (536793732).

Almost surely, 2^1968243673 is an apocalyptic number.

It is an amenable number.

1968243673 is a deficient number, since it is larger than the sum of its proper divisors (178931255).

1968243673 is a wasteful number, since it uses less digits than its factorization.

1968243673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178931254.

The product of its digits is 1306368, while the sum is 49.

The square root of 1968243673 is about 44364.8923474407. The cubic root of 1968243673 is about 1253.2170303764.

The spelling of 1968243673 in words is "one billion, nine hundred sixty-eight million, two hundred forty-three thousand, six hundred seventy-three".