148202809 has 2 divisors, whose sum is σ = 148202810. Its totient is φ = 148202808.

The previous prime is 148202807. The next prime is 148202833. The reversal of 148202809 is 908202841.

148202809 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., 109265209 + 38937600 = 10453^2 + 6240^2 .

It is a cyclic number.

It is not a de Polignac number, because 148202809 - 2¹ = 148202807 is a prime.

Together with 148202807, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (148202801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74101404 + 74101405.

It is an arithmetic number, because the mean of its divisors is an integer number (74101405).

Almost surely, 2^148202809 is an apocalyptic number.

It is an amenable number.

148202809 is a deficient number, since it is larger than the sum of its proper divisors (1).

148202809 is an equidigital number, since it uses as much as digits as its factorization.

148202809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 148202809 is about 12173.8576055415. The cubic root of 148202809 is about 529.1987525078.

The spelling of 148202809 in words is "one hundred forty-eight million, two hundred two thousand, eight hundred nine".