3638475505 has 32 divisors (see below), whose sum is σ = 5125171968. Its totient is φ = 2427648000.

The previous prime is 3638475499. The next prime is 3638475523. The reversal of 3638475505 is 5055748363.

It is not a de Polignac number, because 3638475505 - 2³ = 3638475497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 572274 + ... + 578596.

It is an arithmetic number, because the mean of its divisors is an integer number (160161624).

Almost surely, 2^3638475505 is an apocalyptic number.

3638475505 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3638475505 is a deficient number, since it is larger than the sum of its proper divisors (1486696463).

3638475505 is a wasteful number, since it uses less digits than its factorization.

3638475505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6777.

The product of its (nonzero) digits is 1512000, while the sum is 46.

The square root of 3638475505 is about 60319.7770635801. Note that the first 3 decimals coincide. The cubic root of 3638475505 is about 1538.0595542367.

The spelling of 3638475505 in words is "three billion, six hundred thirty-eight million, four hundred seventy-five thousand, five hundred five".