256111018 has 16 divisors (see below), whose sum is σ = 409021704. Its totient is φ = 119854080.

The previous prime is 256110983. The next prime is 256111021. The reversal of 256111018 is 810111652.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 246270249 + 9840769 = 15693^2 + 3137^2 .

It is a junction number, because it is equal to n+sod(n) for n = 256110983 and 256111001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14655 + ... + 26962.

Almost surely, 2^256111018 is an apocalyptic number.

256111018 is a deficient number, since it is larger than the sum of its proper divisors (152910686).

256111018 is a wasteful number, since it uses less digits than its factorization.

256111018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41817.

The product of its (nonzero) digits is 480, while the sum is 25.

The square root of 256111018 is about 16003.4689364525. The cubic root of 256111018 is about 635.0521940275.

The spelling of 256111018 in words is "two hundred fifty-six million, one hundred eleven thousand, eighteen".