3663949901 has 4 divisors (see below), whose sum is σ = 3762975612. Its totient is φ = 3564924192.

The previous prime is 3663949889. The next prime is 3663949969. The reversal of 3663949901 is 1099493663.

3663949901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3097033801 + 566916100 = 55651^2 + 23810^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3663949901 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3663949901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3663949981) 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, 49512800 + ... + 49512873.

It is an arithmetic number, because the mean of its divisors is an integer number (940743903).

Almost surely, 2^3663949901 is an apocalyptic number.

It is an amenable number.

3663949901 is a deficient number, since it is larger than the sum of its proper divisors (99025711).

3663949901 is an equidigital number, since it uses as much as digits as its factorization.

3663949901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99025710.

The product of its (nonzero) digits is 944784, while the sum is 50.

The square root of 3663949901 is about 60530.5699708833. The cubic root of 3663949901 is about 1541.6407291252.

The spelling of 3663949901 in words is "three billion, six hundred sixty-three million, nine hundred forty-nine thousand, nine hundred one".