4018090 has 8 divisors (see below), whose sum is σ = 7232580. Its totient is φ = 1607232.

The previous prime is 4018087. The next prime is 4018093. The reversal of 4018090 is 908104.

It is an interprime number because it is at equal distance from previous prime (4018087) and next prime (4018093).

It can be written as a sum of positive squares in 2 ways, for example, as 3908529 + 109561 = 1977^2 + 331^2 .

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

It is a super-2 number, since 2×4018090² = 32290094496200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4018093) 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, 200895 + ... + 200914.

Almost surely, 2^4018090 is an apocalyptic number.

4018090 is a deficient number, since it is larger than the sum of its proper divisors (3214490).

4018090 is a wasteful number, since it uses less digits than its factorization.

4018090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401816.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 4018090 is about 2004.5173982782. The cubic root of 4018090 is about 158.9790460632.

The spelling of 4018090 in words is "four million, eighteen thousand, ninety".