3661823601 has 6 divisors (see below), whose sum is σ = 5289300770. Its totient is φ = 2441215728.

The previous prime is 3661823597. The next prime is 3661823609. The reversal of 3661823601 is 1063281663.

3661823601 is a `hidden beast` number, since 3 + 6 + 618 + 2 + 36 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3659645025 + 2178576 = 60495^2 + 1476^2 .

It is not a de Polignac number, because 3661823601 - 2² = 3661823597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3661823609) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 203434636 + ... + 203434653.

Almost surely, 2^3661823601 is an apocalyptic number.

It is an amenable number.

3661823601 is a deficient number, since it is larger than the sum of its proper divisors (1627477169).

3661823601 is a wasteful number, since it uses less digits than its factorization.

3661823601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406869295 (or 406869292 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 3661823601 is about 60513.0035694808. The cubic root of 3661823601 is about 1541.3424513029.

The spelling of 3661823601 in words is "three billion, six hundred sixty-one million, eight hundred twenty-three thousand, six hundred one".