148644313 has 4 divisors (see below), whose sum is σ = 149193088. Its totient is φ = 148095540.

The previous prime is 148644283. The next prime is 148644317. The reversal of 148644313 is 313446841.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 313446841 = 2683 ⋅116827.

It is a cyclic number.

It is not a de Polignac number, because 148644313 - 2¹³ = 148636121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (148644317) 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 3 ways as a sum of consecutive naturals, for example, 273981 + ... + 274522.

It is an arithmetic number, because the mean of its divisors is an integer number (37298272).

Almost surely, 2^148644313 is an apocalyptic number.

It is an amenable number.

148644313 is a deficient number, since it is larger than the sum of its proper divisors (548775).

148644313 is an equidigital number, since it uses as much as digits as its factorization.

148644313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548774.

The product of its digits is 27648, while the sum is 34.

The square root of 148644313 is about 12191.9774031943. The cubic root of 148644313 is about 529.7237352186.

The spelling of 148644313 in words is "one hundred forty-eight million, six hundred forty-four thousand, three hundred thirteen".