18874057 has 2 divisors, whose sum is σ = 18874058. Its totient is φ = 18874056.

The previous prime is 18874039. The next prime is 18874061. The reversal of 18874057 is 75047881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18870336 + 3721 = 4344^2 + 61^2 .

It is a cyclic number.

It is not a de Polignac number, because 18874057 - 2¹⁵ = 18841289 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18874067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9437028 + 9437029.

It is an arithmetic number, because the mean of its divisors is an integer number (9437029).

Almost surely, 2^18874057 is an apocalyptic number.

It is an amenable number.

18874057 is a deficient number, since it is larger than the sum of its proper divisors (1).

18874057 is an equidigital number, since it uses as much as digits as its factorization.

18874057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62720, while the sum is 40.

The square root of 18874057 is about 4344.4282707855. The cubic root of 18874057 is about 266.2492669718.

The spelling of 18874057 in words is "eighteen million, eight hundred seventy-four thousand, fifty-seven".