3646489551 has 32 divisors (see below), whose sum is σ = 5079045120. Its totient is φ = 2324246400.

The previous prime is 3646489549. The next prime is 3646489591. The reversal of 3646489551 is 1559846463.

It is not a de Polignac number, because 3646489551 - 2¹ = 3646489549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3646489494 and 3646489503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3646489591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4974381 + ... + 4975113.

It is an arithmetic number, because the mean of its divisors is an integer number (158720160).

Almost surely, 2^3646489551 is an apocalyptic number.

3646489551 is a deficient number, since it is larger than the sum of its proper divisors (1432555569).

3646489551 is a wasteful number, since it uses less digits than its factorization.

3646489551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247.

The product of its digits is 3110400, while the sum is 51.

The square root of 3646489551 is about 60386.1701964945. The cubic root of 3646489551 is about 1539.1879610212.

The spelling of 3646489551 in words is "three billion, six hundred forty-six million, four hundred eighty-nine thousand, five hundred fifty-one".