258794161 has 4 divisors (see below), whose sum is σ = 259708912. Its totient is φ = 257879412.

The previous prime is 258794143. The next prime is 258794189. The reversal of 258794161 is 161497852.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 258794161 - 2⁷ = 258794033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258794101) 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, 456951 + ... + 457516.

It is an arithmetic number, because the mean of its divisors is an integer number (64927228).

Almost surely, 2^258794161 is an apocalyptic number.

It is an amenable number.

258794161 is a deficient number, since it is larger than the sum of its proper divisors (914751).

258794161 is an equidigital number, since it uses as much as digits as its factorization.

258794161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914750.

The product of its digits is 120960, while the sum is 43.

The square root of 258794161 is about 16087.0805617427. The cubic root of 258794161 is about 637.2621989391.

The spelling of 258794161 in words is "two hundred fifty-eight million, seven hundred ninety-four thousand, one hundred sixty-one".