2358601661 has 16 divisors (see below), whose sum is σ = 2588011440. Its totient is φ = 2136222720.

The previous prime is 2358601579. The next prime is 2358601669. The reversal of 2358601661 is 1661068532.

It can be written as a sum of positive squares in 8 ways, for example, as 1779236761 + 579364900 = 42181^2 + 24070^2 .

It is a cyclic number.

It is not a de Polignac number, because 2358601661 - 2¹⁸ = 2358339517 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 (2358601669) 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, 339935 + ... + 346803.

It is an arithmetic number, because the mean of its divisors is an integer number (161750715).

Almost surely, 2^2358601661 is an apocalyptic number.

It is an amenable number.

2358601661 is a deficient number, since it is larger than the sum of its proper divisors (229409779).

2358601661 is a wasteful number, since it uses less digits than its factorization.

2358601661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7376.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 2358601661 is about 48565.4368970361. The cubic root of 2358601661 is about 1331.1230382979.

The spelling of 2358601661 in words is "two billion, three hundred fifty-eight million, six hundred one thousand, six hundred sixty-one".