203780413 has 8 divisors (see below), whose sum is σ = 206376632. Its totient is φ = 201194496.

The previous prime is 203780407. The next prime is 203780417. The reversal of 203780413 is 314087302.

203780413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 19554084 + 184226329 = 4422^2 + 13573^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203780413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203780417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42031 + ... + 46627.

It is an arithmetic number, because the mean of its divisors is an integer number (25797079).

Almost surely, 2^203780413 is an apocalyptic number.

It is an amenable number.

203780413 is a deficient number, since it is larger than the sum of its proper divisors (2596219).

203780413 is an equidigital number, since it uses as much as digits as its factorization.

203780413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5151.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 203780413 is about 14275.1677047942. The cubic root of 203780413 is about 588.4652373711.

The spelling of 203780413 in words is "two hundred three million, seven hundred eighty thousand, four hundred thirteen".