2090618 has 4 divisors (see below), whose sum is σ = 3135930. Its totient is φ = 1045308.

The previous prime is 2090603. The next prime is 2090623. The reversal of 2090618 is 8160902.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8160902 = 2 ⋅4080451.

It can be written as a sum of positive squares in only one way, i.e., 2036329 + 54289 = 1427^2 + 233^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 522653 + ... + 522656.

2^2090618 is an apocalyptic number.

2090618 is a deficient number, since it is larger than the sum of its proper divisors (1045312).

2090618 is a wasteful number, since it uses less digits than its factorization.

2090618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045311.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 2090618 is about 1445.8969534514. The cubic root of 2090618 is about 127.8669271308.

The spelling of 2090618 in words is "two million, ninety thousand, six hundred eighteen".