3645625541 has 2 divisors, whose sum is σ = 3645625542. Its totient is φ = 3645625540.

The previous prime is 3645625523. The next prime is 3645625553. The reversal of 3645625541 is 1455265463.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3632593441 + 13032100 = 60271^2 + 3610^2 .

It is a cyclic number.

It is not a de Polignac number, because 3645625541 - 2²² = 3641431237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3645625591) 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 as a sum of consecutive naturals, namely, 1822812770 + 1822812771.

It is an arithmetic number, because the mean of its divisors is an integer number (1822812771).

Almost surely, 2^3645625541 is an apocalyptic number.

It is an amenable number.

3645625541 is a deficient number, since it is larger than the sum of its proper divisors (1).

3645625541 is an equidigital number, since it uses as much as digits as its factorization.

3645625541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432000, while the sum is 41.

The square root of 3645625541 is about 60379.0157339452. The cubic root of 3645625541 is about 1539.0663848386.

The spelling of 3645625541 in words is "three billion, six hundred forty-five million, six hundred twenty-five thousand, five hundred forty-one".