18874039 has 2 divisors, whose sum is σ = 18874040. Its totient is φ = 18874038.

The previous prime is 18874021. The next prime is 18874057. The reversal of 18874039 is 93047881.

It is a balanced prime because it is at equal distance from previous prime (18874021) and next prime (18874057).

It is an emirp because it is prime and its reverse (93047881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18874039 - 2⁹ = 18873527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18873992 and 18874010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18874019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9437019 + 9437020.

It is an arithmetic number, because the mean of its divisors is an integer number (9437020).

Almost surely, 2^18874039 is an apocalyptic number.

18874039 is a deficient number, since it is larger than the sum of its proper divisors (1).

18874039 is an equidigital number, since it uses as much as digits as its factorization.

18874039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 18874039 is about 4344.4261991660. The cubic root of 18874039 is about 266.2491823320.

The spelling of 18874039 in words is "eighteen million, eight hundred seventy-four thousand, thirty-nine".