205945534 has 4 divisors (see below), whose sum is σ = 308918304. Its totient is φ = 102972766.

The previous prime is 205945517. The next prime is 205945543. The reversal of 205945534 is 435549502.

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

It is a junction number, because it is equal to n+sod(n) for n = 205945493 and 205945502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51486382 + ... + 51486385.

It is an arithmetic number, because the mean of its divisors is an integer number (77229576).

Almost surely, 2^205945534 is an apocalyptic number.

205945534 is a deficient number, since it is larger than the sum of its proper divisors (102972770).

205945534 is a wasteful number, since it uses less digits than its factorization.

205945534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102972769.

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 205945534 is about 14350.8025559548. The cubic root of 205945534 is about 590.5420031337.

The spelling of 205945534 in words is "two hundred five million, nine hundred forty-five thousand, five hundred thirty-four".