203894413 has 16 divisors (see below), whose sum is σ = 221495040. Its totient is φ = 187604928.

The previous prime is 203894407. The next prime is 203894417. The reversal of 203894413 is 314498302.

203894413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-203894413 is a prime.

It is a super-2 number, since 2×203894413² = 83145863305229138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203894417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230470 + ... + 231352.

It is an arithmetic number, because the mean of its divisors is an integer number (13843440).

Almost surely, 2^203894413 is an apocalyptic number.

It is an amenable number.

203894413 is a deficient number, since it is larger than the sum of its proper divisors (17600627).

203894413 is an frugal number, since it uses more digits than its factorization.

203894413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981 (or 947 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 203894413 is about 14279.1600943473. The cubic root of 203894413 is about 588.5749511070.

The spelling of 203894413 in words is "two hundred three million, eight hundred ninety-four thousand, four hundred thirteen".