3663561203 has 2 divisors, whose sum is σ = 3663561204. Its totient is φ = 3663561202.

The previous prime is 3663561197. The next prime is 3663561211. The reversal of 3663561203 is 3021653663.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3663561203 - 2¹⁰ = 3663560179 is a prime.

It is not a weakly prime, because it can be changed into another prime (3663561103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1831780601 + 1831780602.

It is an arithmetic number, because the mean of its divisors is an integer number (1831780602).

Almost surely, 2^3663561203 is an apocalyptic number.

3663561203 is a deficient number, since it is larger than the sum of its proper divisors (1).

3663561203 is an equidigital number, since it uses as much as digits as its factorization.

3663561203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 35.

The square root of 3663561203 is about 60527.3591279183. The cubic root of 3663561203 is about 1541.5862111072.

The spelling of 3663561203 in words is "three billion, six hundred sixty-three million, five hundred sixty-one thousand, two hundred three".