1920108343 has 4 divisors (see below), whose sum is σ = 1960961760. Its totient is φ = 1879254928.

The previous prime is 1920108341. The next prime is 1920108347. The reversal of 1920108343 is 3438010291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3438010291 = 29 ⋅118552079.

It is a cyclic number.

It is not a de Polignac number, because 1920108343 - 2¹ = 1920108341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920108341) 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 3 ways as a sum of consecutive naturals, for example, 20426638 + ... + 20426731.

It is an arithmetic number, because the mean of its divisors is an integer number (490240440).

Almost surely, 2^1920108343 is an apocalyptic number.

1920108343 is a deficient number, since it is larger than the sum of its proper divisors (40853417).

1920108343 is an equidigital number, since it uses as much as digits as its factorization.

1920108343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40853416.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1920108343 is about 43819.0408726617. The cubic root of 1920108343 is about 1242.9163801982.

The spelling of 1920108343 in words is "one billion, nine hundred twenty million, one hundred eight thousand, three hundred forty-three".