3656161339 has 4 divisors (see below), whose sum is σ = 3680374480. Its totient is φ = 3631948200.

The previous prime is 3656161307. The next prime is 3656161357. The reversal of 3656161339 is 9331616563.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9331616563 = 14369 ⋅649427.

It is a cyclic number.

It is not a de Polignac number, because 3656161339 - 2⁵ = 3656161307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3656161295 and 3656161304.

It is not an unprimeable number, because it can be changed into a prime (3656161139) 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, 12106344 + ... + 12106645.

It is an arithmetic number, because the mean of its divisors is an integer number (920093620).

Almost surely, 2^3656161339 is an apocalyptic number.

3656161339 is a deficient number, since it is larger than the sum of its proper divisors (24213141).

3656161339 is a wasteful number, since it uses less digits than its factorization.

3656161339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24213140.

The product of its digits is 262440, while the sum is 43.

The square root of 3656161339 is about 60466.1999715544. The cubic root of 3656161339 is about 1540.5475844064.

The spelling of 3656161339 in words is "three billion, six hundred fifty-six million, one hundred sixty-one thousand, three hundred thirty-nine".