1256034338 has 32 divisors (see below), whose sum is σ = 2089106544. Its totient is φ = 562609152.

The previous prime is 1256034331. The next prime is 1256034361. The reversal of 1256034338 is 8334306521.

It can be written as a sum of positive squares in 8 ways, for example, as 1008507049 + 247527289 = 31757^2 + 15733^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1256034298 and 1256034307.

It is not an unprimeable number, because it can be changed into a prime (1256034331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 438206 + ... + 441062.

Almost surely, 2^1256034338 is an apocalyptic number.

1256034338 is a deficient number, since it is larger than the sum of its proper divisors (833072206).

1256034338 is a wasteful number, since it uses less digits than its factorization.

1256034338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3366.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 1256034338 is about 35440.5747413893. The cubic root of 1256034338 is about 1078.9479747575.

The spelling of 1256034338 in words is "one billion, two hundred fifty-six million, thirty-four thousand, three hundred thirty-eight".