258653849 has 4 divisors (see below), whose sum is σ = 259251636. Its totient is φ = 258056064.

The previous prime is 258653797. The next prime is 258653851. The reversal of 258653849 is 948356852.

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

It can be written as a sum of positive squares in 2 ways, for example, as 160782400 + 97871449 = 12680^2 + 9893^2 .

It is a cyclic number.

It is not a de Polignac number, because 258653849 - 2²⁰ = 257605273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 258653797 and 258653806.

It is not an unprimeable number, because it can be changed into a prime (258653869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298244 + ... + 299109.

It is an arithmetic number, because the mean of its divisors is an integer number (64812909).

Almost surely, 2^258653849 is an apocalyptic number.

It is an amenable number.

258653849 is a deficient number, since it is larger than the sum of its proper divisors (597787).

258653849 is an equidigital number, since it uses as much as digits as its factorization.

258653849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597786.

The product of its digits is 2073600, while the sum is 50.

The square root of 258653849 is about 16082.7189554503. The cubic root of 258653849 is about 637.1470086816.

The spelling of 258653849 in words is "two hundred fifty-eight million, six hundred fifty-three thousand, eight hundred forty-nine".