148453909 has 2 divisors, whose sum is σ = 148453910. Its totient is φ = 148453908.

The previous prime is 148453889. The next prime is 148453913. The reversal of 148453909 is 909354841.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111365809 + 37088100 = 10553^2 + 6090^2 .

It is a cyclic number.

It is not a de Polignac number, because 148453909 - 2⁹ = 148453397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148453919) 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, 74226954 + 74226955.

It is an arithmetic number, because the mean of its divisors is an integer number (74226955).

Almost surely, 2^148453909 is an apocalyptic number.

It is an amenable number.

148453909 is a deficient number, since it is larger than the sum of its proper divisors (1).

148453909 is an equidigital number, since it uses as much as digits as its factorization.

148453909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 148453909 is about 12184.1663235529. The cubic root of 148453909 is about 529.4974576650.

The spelling of 148453909 in words is "one hundred forty-eight million, four hundred fifty-three thousand, nine hundred nine".