20182938193 has 4 divisors (see below), whose sum is σ = 22017750768. Its totient is φ = 18348125620.

The previous prime is 20182938143. The next prime is 20182938227. The reversal of 20182938193 is 39183928102.

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 not a de Polignac number, because 20182938193 - 2¹⁷ = 20182807121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20182938143) 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, 917406271 + ... + 917406292.

It is an arithmetic number, because the mean of its divisors is an integer number (5504437692).

Almost surely, 2^20182938193 is an apocalyptic number.

It is an amenable number.

20182938193 is a deficient number, since it is larger than the sum of its proper divisors (1834812575).

20182938193 is a wasteful number, since it uses less digits than its factorization.

20182938193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834812574.

The product of its (nonzero) digits is 186624, while the sum is 46.

The spelling of 20182938193 in words is "twenty billion, one hundred eighty-two million, nine hundred thirty-eight thousand, one hundred ninety-three".