205914491 has 2 divisors, whose sum is σ = 205914492. Its totient is φ = 205914490.

The previous prime is 205914433. The next prime is 205914503. The reversal of 205914491 is 194419502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205914491 - 2²² = 201720187 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (205914091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102957245 + 102957246.

It is an arithmetic number, because the mean of its divisors is an integer number (102957246).

Almost surely, 2^205914491 is an apocalyptic number.

205914491 is a deficient number, since it is larger than the sum of its proper divisors (1).

205914491 is an equidigital number, since it uses as much as digits as its factorization.

205914491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 205914491 is about 14349.7209380531. The cubic root of 205914491 is about 590.5123300510.

The spelling of 205914491 in words is "two hundred five million, nine hundred fourteen thousand, four hundred ninety-one".