3649503385 has 24 divisors (see below), whose sum is σ = 4822215048. Its totient is φ = 2649504000.

The previous prime is 3649503383. The next prime is 3649503391. The reversal of 3649503385 is 5833059463.

It can be written as a sum of positive squares in 4 ways, for example, as 619661449 + 3029841936 = 24893^2 + 55044^2 .

It is not a de Polignac number, because 3649503385 - 2¹ = 3649503383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3649503383) 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 23 ways as a sum of consecutive naturals, for example, 358587 + ... + 368623.

It is an arithmetic number, because the mean of its divisors is an integer number (200925627).

Almost surely, 2^3649503385 is an apocalyptic number.

It is an amenable number.

3649503385 is a deficient number, since it is larger than the sum of its proper divisors (1172711663).

3649503385 is a wasteful number, since it uses less digits than its factorization.

3649503385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10665 (or 10654 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 46.

The square root of 3649503385 is about 60411.1197131786. The cubic root of 3649503385 is about 1539.6118919939.

The spelling of 3649503385 in words is "three billion, six hundred forty-nine million, five hundred three thousand, three hundred eighty-five".