148449817 has 2 divisors, whose sum is σ = 148449818. Its totient is φ = 148449816.

The previous prime is 148449787. The next prime is 148449857. The reversal of 148449817 is 718944841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114297481 + 34152336 = 10691^2 + 5844^2 .

It is a cyclic number.

It is not a de Polignac number, because 148449817 - 2¹¹ = 148447769 is a prime.

It is not a weakly prime, because it can be changed into another prime (148449857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74224908 + 74224909.

It is an arithmetic number, because the mean of its divisors is an integer number (74224909).

Almost surely, 2^148449817 is an apocalyptic number.

It is an amenable number.

148449817 is a deficient number, since it is larger than the sum of its proper divisors (1).

148449817 is an equidigital number, since it uses as much as digits as its factorization.

148449817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 258048, while the sum is 46.

The square root of 148449817 is about 12183.9983995403. The cubic root of 148449817 is about 529.4925925781.

The spelling of 148449817 in words is "one hundred forty-eight million, four hundred forty-nine thousand, eight hundred seventeen".