187064081 has 2 divisors, whose sum is σ = 187064082. Its totient is φ = 187064080.

The previous prime is 187064077. The next prime is 187064093. The reversal of 187064081 is 180460781.

187064081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102718225 + 84345856 = 10135^2 + 9184^2 .

It is a cyclic number.

It is not a de Polignac number, because 187064081 - 2² = 187064077 is a prime.

It is a super-2 number, since 2×187064081² = 69985940800749122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (187064011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93532040 + 93532041.

It is an arithmetic number, because the mean of its divisors is an integer number (93532041).

Almost surely, 2^187064081 is an apocalyptic number.

It is an amenable number.

187064081 is a deficient number, since it is larger than the sum of its proper divisors (1).

187064081 is an equidigital number, since it uses as much as digits as its factorization.

187064081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 187064081 is about 13677.1371638951. The cubic root of 187064081 is about 571.9132191444.

The spelling of 187064081 in words is "one hundred eighty-seven million, sixty-four thousand, eighty-one".