205532019 has 96 divisors (see below), whose sum is σ = 400550400. Its totient is φ = 102876480.

The previous prime is 205532017. The next prime is 205532027. The reversal of 205532019 is 910235502.

It is not a de Polignac number, because 205532019 - 2¹ = 205532017 is a prime.

It is a super-2 number, since 2×205532019² = 84486821668432722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 205531983 and 205532001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205532017) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 421794 + ... + 422280.

It is an arithmetic number, because the mean of its divisors is an integer number (4172400).

Almost surely, 2^205532019 is an apocalyptic number.

205532019 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

205532019 is a deficient number, since it is larger than the sum of its proper divisors (195018381).

205532019 is a wasteful number, since it uses less digits than its factorization.

205532019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 537 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 205532019 is about 14336.3879342043. The cubic root of 205532019 is about 590.1464914422.

The spelling of 205532019 in words is "two hundred five million, five hundred thirty-two thousand, nineteen".