3648626779 has 24 divisors (see below), whose sum is σ = 4359071808. Its totient is φ = 3043595520.

The previous prime is 3648626767. The next prime is 3648626789. The reversal of 3648626779 is 9776268463.

It is a de Polignac number, because none of the positive numbers 2^k-3648626779 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (3648626759) 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 23 ways as a sum of consecutive naturals, for example, 412467 + ... + 421219.

It is an arithmetic number, because the mean of its divisors is an integer number (181627992).

Almost surely, 2^3648626779 is an apocalyptic number.

3648626779 is a deficient number, since it is larger than the sum of its proper divisors (710445029).

3648626779 is a wasteful number, since it uses less digits than its factorization.

3648626779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8995 (or 8988 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 58.

The square root of 3648626779 is about 60403.8639409765. The cubic root of 3648626779 is about 1539.4886111933.

The spelling of 3648626779 in words is "three billion, six hundred forty-eight million, six hundred twenty-six thousand, seven hundred seventy-nine".