3649613168 has 30 divisors (see below), whose sum is σ = 7224854544. Its totient is φ = 1785170208.

The previous prime is 3649613147. The next prime is 3649613179. The reversal of 3649613168 is 8613169463.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1655555 + ... + 1657757.

Almost surely, 2^3649613168 is an apocalyptic number.

It is an amenable number.

3649613168 is a deficient number, since it is larger than the sum of its proper divisors (3575241376).

3649613168 is an frugal number, since it uses more digits than its factorization.

3649613168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4461 (or 2252 counting only the distinct ones).

The product of its digits is 559872, while the sum is 47.

The square root of 3649613168 is about 60412.0283387340. The cubic root of 3649613168 is about 1539.6273298493.

Multiplying 3649613168 by its sum of digits (47), we get a square (171531818896 = 414164²).

3649613168 divided by its sum of digits (47) gives a square (77651344 = 8812²).

The spelling of 3649613168 in words is "three billion, six hundred forty-nine million, six hundred thirteen thousand, one hundred sixty-eight".