3651132649 has 8 divisors (see below), whose sum is σ = 3677195592. Its totient is φ = 3625127040.

The previous prime is 3651132607. The next prime is 3651132673. The reversal of 3651132649 is 9462311563.

It can be written as a sum of positive squares in 4 ways, for example, as 42968025 + 3608164624 = 6555^2 + 60068^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3651132649 - 2⁷ = 3651132521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3651132689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117787 + ... + 145519.

It is an arithmetic number, because the mean of its divisors is an integer number (459649449).

Almost surely, 2^3651132649 is an apocalyptic number.

It is an amenable number.

3651132649 is a deficient number, since it is larger than the sum of its proper divisors (26062943).

3651132649 is a wasteful number, since it uses less digits than its factorization.

3651132649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28667.

The product of its digits is 116640, while the sum is 40.

The square root of 3651132649 is about 60424.6030106942. The cubic root of 3651132649 is about 1539.8409698321.

The spelling of 3651132649 in words is "three billion, six hundred fifty-one million, one hundred thirty-two thousand, six hundred forty-nine".