4649781316 has 24 divisors (see below), whose sum is σ = 8622577656. Its totient is φ = 2186403840.

The previous prime is 4649781281. The next prime is 4649781317. The reversal of 4649781316 is 6131879464.

It can be written as a sum of positive squares in 4 ways, for example, as 1766520900 + 2883260416 = 42030^2 + 53696^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4649781316.

It is not an unprimeable number, because it can be changed into a prime (4649781317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61836 + ... + 114556.

It is an arithmetic number, because the mean of its divisors is an integer number (359274069).

Almost surely, 2^4649781316 is an apocalyptic number.

It is an amenable number.

4649781316 is a deficient number, since it is larger than the sum of its proper divisors (3972796340).

4649781316 is a wasteful number, since it uses less digits than its factorization.

4649781316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54039 (or 54037 counting only the distinct ones).

The product of its digits is 870912, while the sum is 49.

The square root of 4649781316 is about 68189.3049971915. The cubic root of 4649781316 is about 1669.0813688695.

The spelling of 4649781316 in words is "four billion, six hundred forty-nine million, seven hundred eighty-one thousand, three hundred sixteen".