188886013 has 2 divisors, whose sum is σ = 188886014. Its totient is φ = 188886012.

The previous prime is 188885987. The next prime is 188886029. The reversal of 188886013 is 310688881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168428484 + 20457529 = 12978^2 + 4523^2 .

It is an emirp because it is prime and its reverse (310688881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 188886013 - 2¹⁷ = 188754941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188886053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94443006 + 94443007.

It is an arithmetic number, because the mean of its divisors is an integer number (94443007).

Almost surely, 2^188886013 is an apocalyptic number.

It is an amenable number.

188886013 is a deficient number, since it is larger than the sum of its proper divisors (1).

188886013 is an equidigital number, since it uses as much as digits as its factorization.

188886013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73728, while the sum is 43.

The square root of 188886013 is about 13743.5807925009. The cubic root of 188886013 is about 573.7639616375.

The spelling of 188886013 in words is "one hundred eighty-eight million, eight hundred eighty-six thousand, thirteen".