205619043 has 12 divisors (see below), whose sum is σ = 318919560. Its totient is φ = 117496512.

The previous prime is 205619023. The next prime is 205619069. The reversal of 205619043 is 340916502.

It is not a de Polignac number, because 205619043 - 2⁶ = 205618979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 205619043.

It is not an unprimeable number, because it can be changed into a prime (205619023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 699238 + ... + 699531.

It is an arithmetic number, because the mean of its divisors is an integer number (26576630).

Almost surely, 2^205619043 is an apocalyptic number.

205619043 is a deficient number, since it is larger than the sum of its proper divisors (113300517).

205619043 is a wasteful number, since it uses less digits than its factorization.

205619043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398786 (or 1398779 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 205619043 is about 14339.4226871238. The cubic root of 205619043 is about 590.2297706995.

The spelling of 205619043 in words is "two hundred five million, six hundred nineteen thousand, forty-three".