3648821187 has 12 divisors (see below), whose sum is σ = 5347584200. Its totient is φ = 2211406560.

The previous prime is 3648821159. The next prime is 3648821203. The reversal of 3648821187 is 7811288463.

It is not a de Polignac number, because 3648821187 - 2³⁰ = 2575079363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3648821087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5025562 + ... + 5026287.

Almost surely, 2^3648821187 is an apocalyptic number.

3648821187 is a deficient number, since it is larger than the sum of its proper divisors (1698763013).

3648821187 is a wasteful number, since it uses less digits than its factorization.

3648821187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10051874 (or 10051863 counting only the distinct ones).

The product of its digits is 516096, while the sum is 48.

The square root of 3648821187 is about 60405.4731543426. The cubic root of 3648821187 is about 1539.5159533145.

It can be divided in two parts, 36488 and 21187, that added together give a palindrome (57675).

The spelling of 3648821187 in words is "three billion, six hundred forty-eight million, eight hundred twenty-one thousand, one hundred eighty-seven".