2381673643 has 4 divisors (see below), whose sum is σ = 2385213208. Its totient is φ = 2378134080.

The previous prime is 2381673631. The next prime is 2381673649. The reversal of 2381673643 is 3463761832.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2381673643 - 2¹⁷ = 2381542571 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2381673643.

It is not an unprimeable number, because it can be changed into a prime (2381673649) 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, 1768773 + ... + 1770118.

It is an arithmetic number, because the mean of its divisors is an integer number (596303302).

Almost surely, 2^2381673643 is an apocalyptic number.

2381673643 is a deficient number, since it is larger than the sum of its proper divisors (3539565).

2381673643 is an equidigital number, since it uses as much as digits as its factorization.

2381673643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3539564.

The product of its digits is 435456, while the sum is 43.

The square root of 2381673643 is about 48802.3938244837. The cubic root of 2381673643 is about 1335.4493370711.

The spelling of 2381673643 in words is "two billion, three hundred eighty-one million, six hundred seventy-three thousand, six hundred forty-three".