1256830674 has 16 divisors (see below), whose sum is σ = 2742176160. Its totient is φ = 380857760.

The previous prime is 1256830657. The next prime is 1256830691. The reversal of 1256830674 is 4760386521.

It is an interprime number because it is at equal distance from previous prime (1256830657) and next prime (1256830691).

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 7 ways as a sum of consecutive naturals, for example, 9521379 + ... + 9521510.

It is an arithmetic number, because the mean of its divisors is an integer number (171386010).

Almost surely, 2^1256830674 is an apocalyptic number.

1256830674 is an abundant number, since it is smaller than the sum of its proper divisors (1485345486).

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

1256830674 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 9 representation: 1256830674 = (3216847506)₉.

1256830674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19042905.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 1256830674 is about 35451.8077677289. The cubic root of 1256830674 is about 1079.1759471866.

The spelling of 1256830674 in words is "one billion, two hundred fifty-six million, eight hundred thirty thousand, six hundred seventy-four".