18077313 has 4 divisors (see below), whose sum is σ = 24103088. Its totient is φ = 12051540.

The previous prime is 18077299. The next prime is 18077327. The reversal of 18077313 is 31377081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31377081 = 3 ⋅10459027.

It is an interprime number because it is at equal distance from previous prime (18077299) and next prime (18077327).

It is not a de Polignac number, because 18077313 - 2¹⁸ = 17815169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18077363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3012883 + ... + 3012888.

It is an arithmetic number, because the mean of its divisors is an integer number (6025772).

Almost surely, 2^18077313 is an apocalyptic number.

It is an amenable number.

18077313 is a deficient number, since it is larger than the sum of its proper divisors (6025775).

18077313 is an equidigital number, since it uses as much as digits as its factorization.

18077313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6025774.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 18077313 is about 4251.7423487319. The cubic root of 18077313 is about 262.4488208613.

The spelling of 18077313 in words is "eighteen million, seventy-seven thousand, three hundred thirteen".