3626429561 has 4 divisors (see below), whose sum is σ = 3658521972. Its totient is φ = 3594337152.

The previous prime is 3626429539. The next prime is 3626429563. The reversal of 3626429561 is 1659246263.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1200276025 + 2426153536 = 34645^2 + 49256^2 .

It is a cyclic number.

It is not a de Polignac number, because 3626429561 - 2¹⁴ = 3626413177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3626429563) 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 3 ways as a sum of consecutive naturals, for example, 16046036 + ... + 16046261.

It is an arithmetic number, because the mean of its divisors is an integer number (914630493).

Almost surely, 2^3626429561 is an apocalyptic number.

It is an amenable number.

3626429561 is a deficient number, since it is larger than the sum of its proper divisors (32092411).

3626429561 is a wasteful number, since it uses less digits than its factorization.

3626429561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32092410.

The product of its digits is 466560, while the sum is 44.

The square root of 3626429561 is about 60219.8435816633. The cubic root of 3626429561 is about 1536.3603202952.

The spelling of 3626429561 in words is "three billion, six hundred twenty-six million, four hundred twenty-nine thousand, five hundred sixty-one".