258738197 has 4 divisors (see below), whose sum is σ = 259203276. Its totient is φ = 258273120.

The previous prime is 258738173. The next prime is 258738211. The reversal of 258738197 is 791837852.

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 74891716 + 183846481 = 8654^2 + 13559^2 .

It is a cyclic number.

It is not a de Polignac number, because 258738197 - 2⁶ = 258738133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258738107) 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, 231704 + ... + 232817.

It is an arithmetic number, because the mean of its divisors is an integer number (64800819).

Almost surely, 2^258738197 is an apocalyptic number.

It is an amenable number.

258738197 is a deficient number, since it is larger than the sum of its proper divisors (465079).

258738197 is an equidigital number, since it uses as much as digits as its factorization.

258738197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465078.

The product of its digits is 846720, while the sum is 50.

The square root of 258738197 is about 16085.3410594864. The cubic root of 258738197 is about 637.2162598388.

The spelling of 258738197 in words is "two hundred fifty-eight million, seven hundred thirty-eight thousand, one hundred ninety-seven".