20185074383 has 4 divisors (see below), whose sum is σ = 20194975920. Its totient is φ = 20175172848.

The previous prime is 20185074379. The next prime is 20185074391. The reversal of 20185074383 is 38347058102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38347058102 = 2 ⋅19173529051.

It is a cyclic number.

It is not a de Polignac number, because 20185074383 - 2² = 20185074379 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 20185074383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20185071383) 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, 4947710 + ... + 4951787.

It is an arithmetic number, because the mean of its divisors is an integer number (5048743980).

Almost surely, 2^20185074383 is an apocalyptic number.

20185074383 is a deficient number, since it is larger than the sum of its proper divisors (9901537).

20185074383 is an equidigital number, since it uses as much as digits as its factorization.

20185074383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9901536.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 20185074383 in words is "twenty billion, one hundred eighty-five million, seventy-four thousand, three hundred eighty-three".