648301183 has 4 divisors (see below), whose sum is σ = 648807768. Its totient is φ = 647794600.

The previous prime is 648301169. The next prime is 648301189. The reversal of 648301183 is 381103846.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 381103846 = 2 ⋅190551923.

It is a cyclic number.

It is not a de Polignac number, because 648301183 - 2²⁵ = 614746751 is a prime.

It is a super-4 number, since 4×648301183⁴ (a number of 36 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648301189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251368 + ... + 253933.

It is an arithmetic number, because the mean of its divisors is an integer number (162201942).

Almost surely, 2^648301183 is an apocalyptic number.

648301183 is a deficient number, since it is larger than the sum of its proper divisors (506585).

648301183 is a wasteful number, since it uses less digits than its factorization.

648301183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506584.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 648301183 is about 25461.7592283016. The cubic root of 648301183 is about 865.4837896447.

The spelling of 648301183 in words is "six hundred forty-eight million, three hundred one thousand, one hundred eighty-three".