4051618 has 8 divisors (see below), whose sum is σ = 6090012. Its totient is φ = 2021616.

The previous prime is 4051613. The next prime is 4051631. The reversal of 4051618 is 8161504.

It can be written as a sum of positive squares in 2 ways, for example, as 2934369 + 1117249 = 1713^2 + 1057^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 4051592 and 4051601.

It is not an unprimeable number, because it can be changed into a prime (4051613) 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, 705 + ... + 2932.

Almost surely, 2^4051618 is an apocalyptic number.

4051618 is a deficient number, since it is larger than the sum of its proper divisors (2038394).

4051618 is a wasteful number, since it uses less digits than its factorization.

4051618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4196.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 4051618 is about 2012.8631349399. The cubic root of 4051618 is about 159.4200094842.

The spelling of 4051618 in words is "four million, fifty-one thousand, six hundred eighteen".