3648561907 has 4 divisors (see below), whose sum is σ = 3649328560. Its totient is φ = 3647795256.

The previous prime is 3648561899. The next prime is 3648561929. The reversal of 3648561907 is 7091658463.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3648561907 - 2³ = 3648561899 is a prime.

It is a super-2 number, since 2×3648561907² = 26624007978422953298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3648561107) 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, 376143 + ... + 385720.

It is an arithmetic number, because the mean of its divisors is an integer number (912332140).

Almost surely, 2^3648561907 is an apocalyptic number.

3648561907 is a deficient number, since it is larger than the sum of its proper divisors (766653).

3648561907 is an equidigital number, since it uses as much as digits as its factorization.

3648561907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766652.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The square root of 3648561907 is about 60403.3269530744. The cubic root of 3648561907 is about 1539.4794871856.

The spelling of 3648561907 in words is "three billion, six hundred forty-eight million, five hundred sixty-one thousand, nine hundred seven".