3541626421 has 16 divisors (see below), whose sum is σ = 3773286000. Its totient is φ = 3317787648.

The previous prime is 3541626409. The next prime is 3541626427. The reversal of 3541626421 is 1246261453.

It can be written as a sum of positive squares in 8 ways, for example, as 41602500 + 3500023921 = 6450^2 + 59161^2 .

It is a cyclic number.

It is not a de Polignac number, because 3541626421 - 2⁹ = 3541625909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3541626427) 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 15 ways as a sum of consecutive naturals, for example, 395805 + ... + 404653.

It is an arithmetic number, because the mean of its divisors is an integer number (235830375).

Almost surely, 2^3541626421 is an apocalyptic number.

It is an amenable number.

3541626421 is a deficient number, since it is larger than the sum of its proper divisors (231659579).

3541626421 is a wasteful number, since it uses less digits than its factorization.

3541626421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9288.

The product of its digits is 34560, while the sum is 34.

The square root of 3541626421 is about 59511.5654389968. The cubic root of 3541626421 is about 1524.2899385041.

Adding to 3541626421 its reverse (1246261453), we get a palindrome (4787887874).

The spelling of 3541626421 in words is "three billion, five hundred forty-one million, six hundred twenty-six thousand, four hundred twenty-one".