3638668363 has 4 divisors (see below), whose sum is σ = 3969456408. Its totient is φ = 3307880320.

The previous prime is 3638668349. The next prime is 3638668373.

3638668363 is nontrivially palindromic in base 10.

3638668363 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 is a cyclic number.

It is not a de Polignac number, because 3638668363 - 2¹³ = 3638660171 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 3638668363.

It is not an unprimeable number, because it can be changed into a prime (3638668343) 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, 165394006 + ... + 165394027.

It is an arithmetic number, because the mean of its divisors is an integer number (992364102).

Almost surely, 2^3638668363 is an apocalyptic number.

3638668363 is a deficient number, since it is larger than the sum of its proper divisors (330788045).

3638668363 is a wasteful number, since it uses less digits than its factorization.

3638668363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330788044.

The product of its digits is 6718464, while the sum is 52.

The square root of 3638668363 is about 60321.3756723104. The cubic root of 3638668363 is about 1538.0867287908.

The spelling of 3638668363 in words is "three billion, six hundred thirty-eight million, six hundred sixty-eight thousand, three hundred sixty-three".