148453778209 has 9 divisors (see below), whose sum is σ = 163181125681. Its totient is φ = 134954127220.

The previous prime is 148453778201. The next prime is 148453778237. The reversal of 148453778209 is 902877354841.

The square root of 148453778209 is 385297.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 148453778209 - 2³ = 148453778201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148453778201) 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 in 8 ways as a sum of consecutive naturals, for example, 4220754 + ... + 4255780.

Almost surely, 2^148453778209 is an apocalyptic number.

148453778209 is the 385297-th square number.

148453778209 is the 192649-th centered octagonal number.

It is an amenable number.

148453778209 is a deficient number, since it is larger than the sum of its proper divisors (14727347472).

148453778209 is an frugal number, since it uses more digits than its factorization.

148453778209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70076 (or 35038 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 58.

The spelling of 148453778209 in words is "one hundred forty-eight billion, four hundred fifty-three million, seven hundred seventy-eight thousand, two hundred nine".