1968040343 has 4 divisors (see below), whose sum is σ = 2083807440. Its totient is φ = 1852273248.

The previous prime is 1968040313. The next prime is 1968040423. The reversal of 1968040343 is 3430408691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3430408691 = 571 ⋅6007721.

It is a cyclic number.

It is not a de Polignac number, because 1968040343 - 2⁶ = 1968040279 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1968040297 and 1968040306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968040313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57883523 + ... + 57883556.

It is an arithmetic number, because the mean of its divisors is an integer number (520951860).

Almost surely, 2^1968040343 is an apocalyptic number.

1968040343 is a deficient number, since it is larger than the sum of its proper divisors (115767097).

1968040343 is a wasteful number, since it uses less digits than its factorization.

1968040343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115767096.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 1968040343 is about 44362.6007240333. The cubic root of 1968040343 is about 1253.1738742372.

The spelling of 1968040343 in words is "one billion, nine hundred sixty-eight million, forty thousand, three hundred forty-three".