1257934674 has 16 divisors (see below), whose sum is σ = 2540296512. Its totient is φ = 415240368.

The previous prime is 1257934673. The next prime is 1257934679. The reversal of 1257934674 is 4764397521.

It is not an unprimeable number, because it can be changed into a prime (1257934673) 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, 1017129 + ... + 1018364.

It is an arithmetic number, because the mean of its divisors is an integer number (158768532).

Almost surely, 2^1257934674 is an apocalyptic number.

1257934674 is an abundant number, since it is smaller than the sum of its proper divisors (1282361838).

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

1257934674 is a wasteful number, since it uses less digits than its factorization.

1257934674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2035601.

The product of its digits is 1270080, while the sum is 48.

The square root of 1257934674 is about 35467.3747830312. The cubic root of 1257934674 is about 1079.4918374110.

The spelling of 1257934674 in words is "one billion, two hundred fifty-seven million, nine hundred thirty-four thousand, six hundred seventy-four".