518890205 has 16 divisors (see below), whose sum is σ = 632307504. Its totient is φ = 408706560.

The previous prime is 518890153. The next prime is 518890231. The reversal of 518890205 is 502098815.

It can be written as a sum of positive squares in 8 ways, for example, as 43388569 + 475501636 = 6587^2 + 21806^2 .

It is not a de Polignac number, because 518890205 - 2⁸ = 518889949 is a prime.

It is a super-4 number, since 4×518890205⁴ (a number of 36 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319295 + ... + 320915.

It is an arithmetic number, because the mean of its divisors is an integer number (39519219).

Almost surely, 2^518890205 is an apocalyptic number.

It is an amenable number.

518890205 is a deficient number, since it is larger than the sum of its proper divisors (113417299).

518890205 is a wasteful number, since it uses less digits than its factorization.

518890205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 518890205 is about 22779.1616395336. The cubic root of 518890205 is about 803.5726697255.

The spelling of 518890205 in words is "five hundred eighteen million, eight hundred ninety thousand, two hundred five".