205493419 has 4 divisors (see below), whose sum is σ = 205688160. Its totient is φ = 205298680.

The previous prime is 205493411. The next prime is 205493429. The reversal of 205493419 is 914394502.

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

It is a cyclic number.

It is not a de Polignac number, because 205493419 - 2³ = 205493411 is a prime.

It is a super-2 number, since 2×205493419² = 84455090504619122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205493411) 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, 95779 + ... + 97900.

It is an arithmetic number, because the mean of its divisors is an integer number (51422040).

Almost surely, 2^205493419 is an apocalyptic number.

205493419 is a deficient number, since it is larger than the sum of its proper divisors (194741).

205493419 is a wasteful number, since it uses less digits than its factorization.

205493419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194740.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 205493419 is about 14335.0416462597. The cubic root of 205493419 is about 590.1095449186.

The spelling of 205493419 in words is "two hundred five million, four hundred ninety-three thousand, four hundred nineteen".