3646825429 has 16 divisors (see below), whose sum is σ = 4067345520. Its totient is φ = 3246566400.

The previous prime is 3646825423. The next prime is 3646825433. The reversal of 3646825429 is 9245286463.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 485012529 + 3161812900 = 22023^2 + 56230^2 .

It is a cyclic number.

It is not a de Polignac number, because 3646825429 - 2¹⁵ = 3646792661 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 (3646825423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 363379 + ... + 373279.

It is an arithmetic number, because the mean of its divisors is an integer number (254209095).

Almost surely, 2^3646825429 is an apocalyptic number.

It is an amenable number.

3646825429 is a deficient number, since it is larger than the sum of its proper divisors (420520091).

3646825429 is a wasteful number, since it uses less digits than its factorization.

3646825429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10920.

The product of its digits is 2488320, while the sum is 49.

The square root of 3646825429 is about 60388.9512162614. The cubic root of 3646825429 is about 1539.2352177499.

The spelling of 3646825429 in words is "three billion, six hundred forty-six million, eight hundred twenty-five thousand, four hundred twenty-nine".