3645296389 has 4 divisors (see below), whose sum is σ = 4166053024. Its totient is φ = 3124539756.

The previous prime is 3645296387. The next prime is 3645296399. The reversal of 3645296389 is 9836925463.

3645296389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9836925463 = 4651 ⋅2115013.

It is a cyclic number.

It is not a de Polignac number, because 3645296389 - 2¹ = 3645296387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645296387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260378307 + ... + 260378320.

It is an arithmetic number, because the mean of its divisors is an integer number (1041513256).

Almost surely, 2^3645296389 is an apocalyptic number.

It is an amenable number.

3645296389 is a deficient number, since it is larger than the sum of its proper divisors (520756635).

3645296389 is an equidigital number, since it uses as much as digits as its factorization.

3645296389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520756634.

The product of its digits is 8398080, while the sum is 55.

The square root of 3645296389 is about 60376.2899572340. The cubic root of 3645296389 is about 1539.0200642991.

The spelling of 3645296389 in words is "three billion, six hundred forty-five million, two hundred ninety-six thousand, three hundred eighty-nine".