20238441673 has 4 divisors (see below), whose sum is σ = 21428938260. Its totient is φ = 19047945088.

The previous prime is 20238441661. The next prime is 20238441683. The reversal of 20238441673 is 37614483202.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15989096704 + 4249344969 = 126448^2 + 65187^2 .

It is a cyclic number.

It is not a de Polignac number, because 20238441673 - 2²¹ = 20236344521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20238441683) 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, 595248268 + ... + 595248301.

It is an arithmetic number, because the mean of its divisors is an integer number (5357234565).

Almost surely, 2^20238441673 is an apocalyptic number.

It is an amenable number.

20238441673 is a deficient number, since it is larger than the sum of its proper divisors (1190496587).

20238441673 is a wasteful number, since it uses less digits than its factorization.

20238441673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190496586.

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 20238441673 in words is "twenty billion, two hundred thirty-eight million, four hundred forty-one thousand, six hundred seventy-three".