257161468 has 6 divisors (see below), whose sum is σ = 450032576. Its totient is φ = 128580732.

The previous prime is 257161451. The next prime is 257161481. The reversal of 257161468 is 864161752.

It is a super-2 number, since 2×257161468² = 132264041247830048, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 257161468.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32145180 + ... + 32145187.

Almost surely, 2^257161468 is an apocalyptic number.

It is an amenable number.

257161468 is a deficient number, since it is larger than the sum of its proper divisors (192871108).

257161468 is a wasteful number, since it uses less digits than its factorization.

257161468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64290371 (or 64290369 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 257161468 is about 16036.2547996719. The cubic root of 257161468 is about 635.9192406982.

The spelling of 257161468 in words is "two hundred fifty-seven million, one hundred sixty-one thousand, four hundred sixty-eight".