1256894374 has 8 divisors (see below), whose sum is σ = 1903646160. Its totient is φ = 622345656.

The previous prime is 1256894341. The next prime is 1256894377. The reversal of 1256894374 is 4734986521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256894377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3050509 + ... + 3050920.

It is an arithmetic number, because the mean of its divisors is an integer number (237955770).

Almost surely, 2^1256894374 is an apocalyptic number.

1256894374 is a deficient number, since it is larger than the sum of its proper divisors (646751786).

1256894374 is a wasteful number, since it uses less digits than its factorization.

1256894374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6101534.

The product of its digits is 1451520, while the sum is 49.

The square root of 1256894374 is about 35452.7061590508. The cubic root of 1256894374 is about 1079.1941788513.

The spelling of 1256894374 in words is "one billion, two hundred fifty-six million, eight hundred ninety-four thousand, three hundred seventy-four".