18876113 has 4 divisors (see below), whose sum is σ = 19336548. Its totient is φ = 18415680.

The previous prime is 18876107. The next prime is 18876119. The reversal of 18876113 is 31167881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31167881 = 1579 ⋅19739.

It is an interprime number because it is at equal distance from previous prime (18876107) and next prime (18876119).

It can be written as a sum of positive squares in 2 ways, for example, as 3564544 + 15311569 = 1888^2 + 3913^2 .

It is a cyclic number.

It is not a de Polignac number, because 18876113 - 2⁶ = 18876049 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 (18876119) 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, 230156 + ... + 230237.

It is an arithmetic number, because the mean of its divisors is an integer number (4834137).

Almost surely, 2^18876113 is an apocalyptic number.

It is an amenable number.

18876113 is a deficient number, since it is larger than the sum of its proper divisors (460435).

18876113 is an equidigital number, since it uses as much as digits as its factorization.

18876113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460434.

The product of its digits is 8064, while the sum is 35.

The square root of 18876113 is about 4344.6648892636. The cubic root of 18876113 is about 266.2589343619.

It can be divided in two parts, 1887 and 6113, that added together give a cube (8000 = 20³).

The spelling of 18876113 in words is "eighteen million, eight hundred seventy-six thousand, one hundred thirteen".