3633442861 has 4 divisors (see below), whose sum is σ = 3847174812. Its totient is φ = 3419710912.

The previous prime is 3633442831. The next prime is 3633442873. The reversal of 3633442861 is 1682443363.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2858933961 + 774508900 = 53469^2 + 27830^2 .

It is a cyclic number.

It is not a de Polignac number, because 3633442861 - 2⁵ = 3633442829 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3633442801) 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, 106865950 + ... + 106865983.

It is an arithmetic number, because the mean of its divisors is an integer number (961793703).

Almost surely, 2^3633442861 is an apocalyptic number.

It is an amenable number.

3633442861 is a deficient number, since it is larger than the sum of its proper divisors (213731951).

3633442861 is a wasteful number, since it uses less digits than its factorization.

3633442861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213731950.

The product of its digits is 248832, while the sum is 40.

The square root of 3633442861 is about 60278.0462606412. The cubic root of 3633442861 is about 1537.3500924723.

The spelling of 3633442861 in words is "three billion, six hundred thirty-three million, four hundred forty-two thousand, eight hundred sixty-one".