3648781201 has 4 divisors (see below), whose sum is σ = 3929456692. Its totient is φ = 3368105712.

The previous prime is 3648781153. The next prime is 3648781217. The reversal of 3648781201 is 1021878463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1021878463 = 19 ⋅53783077.

It can be written as a sum of positive squares in 2 ways, for example, as 860835600 + 2787945601 = 29340^2 + 52801^2 .

It is a cyclic number.

It is not a de Polignac number, because 3648781201 - 2¹⁷ = 3648650129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3648781291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140337726 + ... + 140337751.

It is an arithmetic number, because the mean of its divisors is an integer number (982364173).

Almost surely, 2^3648781201 is an apocalyptic number.

It is an amenable number.

3648781201 is a deficient number, since it is larger than the sum of its proper divisors (280675491).

3648781201 is a wasteful number, since it uses less digits than its factorization.

3648781201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280675490.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 3648781201 is about 60405.1421734938. The cubic root of 3648781201 is about 1539.5103296435.

The spelling of 3648781201 in words is "three billion, six hundred forty-eight million, seven hundred eighty-one thousand, two hundred one".