148865081 has 2 divisors, whose sum is σ = 148865082. Its totient is φ = 148865080.

The previous prime is 148865053. The next prime is 148865111. The reversal of 148865081 is 180568841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106419856 + 42445225 = 10316^2 + 6515^2 .

It is an emirp because it is prime and its reverse (180568841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 148865081 - 2¹⁴ = 148848697 is a prime.

It is a super-2 number, since 2×148865081² = 44321624682273122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (148865021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74432540 + 74432541.

It is an arithmetic number, because the mean of its divisors is an integer number (74432541).

Almost surely, 2^148865081 is an apocalyptic number.

It is an amenable number.

148865081 is a deficient number, since it is larger than the sum of its proper divisors (1).

148865081 is an equidigital number, since it uses as much as digits as its factorization.

148865081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61440, while the sum is 41.

The square root of 148865081 is about 12201.0278665365. The cubic root of 148865081 is about 529.9858557991.

The spelling of 148865081 in words is "one hundred forty-eight million, eight hundred sixty-five thousand, eighty-one".