4609613661 has 16 divisors (see below), whose sum is σ = 6317044608. Its totient is φ = 2987755200.

The previous prime is 4609613627. The next prime is 4609613663. The reversal of 4609613661 is 1663169064.

It is not a de Polignac number, because 4609613661 - 2¹¹ = 4609611613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4609613663) 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, 138256 + ... + 168326.

It is an arithmetic number, because the mean of its divisors is an integer number (394815288).

Almost surely, 2^4609613661 is an apocalyptic number.

It is an amenable number.

4609613661 is a deficient number, since it is larger than the sum of its proper divisors (1707430947).

4609613661 is a wasteful number, since it uses less digits than its factorization.

4609613661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31492.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 4609613661 is about 67894.1356893215. The cubic root of 4609613661 is about 1664.2612805718.

The spelling of 4609613661 in words is "four billion, six hundred nine million, six hundred thirteen thousand, six hundred sixty-one".