148666513 has 6 divisors (see below), whose sum is σ = 157926326. Its totient is φ = 139921152.

The previous prime is 148666459. The next prime is 148666541. The reversal of 148666513 is 315666841.

It can be written as a sum of positive squares in 3 ways, for example, as 33039504 + 115627009 = 5748^2 + 10753^2 .

It is not a de Polignac number, because 148666513 - 2¹⁷ = 148535441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148666543) 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 5 ways as a sum of consecutive naturals, for example, 256920 + ... + 257497.

Almost surely, 2^148666513 is an apocalyptic number.

It is an amenable number.

148666513 is a deficient number, since it is larger than the sum of its proper divisors (9259813).

148666513 is an equidigital number, since it uses as much as digits as its factorization.

148666513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514451 (or 514434 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 148666513 is about 12192.8878039618. The cubic root of 148666513 is about 529.7501052857.

The spelling of 148666513 in words is "one hundred forty-eight million, six hundred sixty-six thousand, five hundred thirteen".