4649315391 has 48 divisors (see below), whose sum is σ = 7772544000. Its totient is φ = 2623230144.

The previous prime is 4649315387. The next prime is 4649315399. The reversal of 4649315391 is 1935139464.

4649315391 is a `hidden beast` number, since 4 + 6 + 493 + 153 + 9 + 1 = 666.

It is not a de Polignac number, because 4649315391 - 2² = 4649315387 is a prime.

It is a super-2 number, since 2×4649315391² = 43232267209978965762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4649315399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1678890 + ... + 1681656.

It is an arithmetic number, because the mean of its divisors is an integer number (161928000).

Almost surely, 2^4649315391 is an apocalyptic number.

4649315391 is a deficient number, since it is larger than the sum of its proper divisors (3123228609).

4649315391 is a wasteful number, since it uses less digits than its factorization.

4649315391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108 (or 3105 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 4649315391 is about 68185.8885034140. Note that the first 3 decimals coincide. The cubic root of 4649315391 is about 1669.0256176660.

The spelling of 4649315391 in words is "four billion, six hundred forty-nine million, three hundred fifteen thousand, three hundred ninety-one".