257919134 has 16 divisors (see below), whose sum is σ = 422377200. Its totient is φ = 117144960.

The previous prime is 257919133. The next prime is 257919157. The reversal of 257919134 is 431919752.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 257919091 and 257919100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257919133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30392 + ... + 37940.

It is an arithmetic number, because the mean of its divisors is an integer number (26398575).

Almost surely, 2^257919134 is an apocalyptic number.

257919134 is a deficient number, since it is larger than the sum of its proper divisors (164458066).

257919134 is a wasteful number, since it uses less digits than its factorization.

257919134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9115.

The product of its digits is 68040, while the sum is 41.

The square root of 257919134 is about 16059.8609583022. The cubic root of 257919134 is about 636.5431573627.

The spelling of 257919134 in words is "two hundred fifty-seven million, nine hundred nineteen thousand, one hundred thirty-four".