203820219413 has 4 divisors (see below), whose sum is σ = 203825288940. Its totient is φ = 203815149888.

The previous prime is 203820219311. The next prime is 203820219443. The reversal of 203820219413 is 314912028302.

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 197937789604 + 5882429809 = 444902^2 + 76697^2 .

It is a cyclic number.

It is not a de Polignac number, because 203820219413 - 2¹² = 203820215317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203820219443) 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, 2473970 + ... + 2555027.

It is an arithmetic number, because the mean of its divisors is an integer number (50956322235).

Almost surely, 2^203820219413 is an apocalyptic number.

It is an amenable number.

203820219413 is a deficient number, since it is larger than the sum of its proper divisors (5069527).

203820219413 is an equidigital number, since it uses as much as digits as its factorization.

203820219413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5069526.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 203820219413 in words is "two hundred three billion, eight hundred twenty million, two hundred nineteen thousand, four hundred thirteen".