1257894968 has 16 divisors (see below), whose sum is σ = 2572967160. Its totient is φ = 571770400.

The previous prime is 1257894947. The next prime is 1257894977. The reversal of 1257894968 is 8694987521.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7147043 + ... + 7147218.

Almost surely, 2^1257894968 is an apocalyptic number.

It is an amenable number.

1257894968 is an abundant number, since it is smaller than the sum of its proper divisors (1315072192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1257894968 is a wasteful number, since it uses less digits than its factorization.

1257894968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14294278 (or 14294274 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 59.

The square root of 1257894968 is about 35466.8150247524. The cubic root of 1257894968 is about 1079.4804794407.

The spelling of 1257894968 in words is "one billion, two hundred fifty-seven million, eight hundred ninety-four thousand, nine hundred sixty-eight".