148785449 has 2 divisors, whose sum is σ = 148785450. Its totient is φ = 148785448.

The previous prime is 148785443. The next prime is 148785451. The reversal of 148785449 is 944587841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120055849 + 28729600 = 10957^2 + 5360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-148785449 is a prime.

Together with 148785451, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 148785397 and 148785406.

It is not a weakly prime, because it can be changed into another prime (148785443) 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, 74392724 + 74392725.

It is an arithmetic number, because the mean of its divisors is an integer number (74392725).

Almost surely, 2^148785449 is an apocalyptic number.

It is an amenable number.

148785449 is a deficient number, since it is larger than the sum of its proper divisors (1).

148785449 is an equidigital number, since it uses as much as digits as its factorization.

148785449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1290240, while the sum is 50.

The square root of 148785449 is about 12197.7640983911. The cubic root of 148785449 is about 529.8913376378.

The spelling of 148785449 in words is "one hundred forty-eight million, seven hundred eighty-five thousand, four hundred forty-nine".