1638050105 has 8 divisors (see below), whose sum is σ = 1966341312. Its totient is φ = 1309985968.

The previous prime is 1638050093. The next prime is 1638050107. The reversal of 1638050105 is 5010508361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1638050105 - 2⁸ = 1638049849 is a prime.

It is a super-2 number, since 2×1638050105² = 5366416292981022050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1638050107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40469 + ... + 70098.

It is an arithmetic number, because the mean of its divisors is an integer number (245792664).

Almost surely, 2^1638050105 is an apocalyptic number.

It is an amenable number.

1638050105 is a deficient number, since it is larger than the sum of its proper divisors (328291207).

1638050105 is a wasteful number, since it uses less digits than its factorization.

1638050105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113535.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 1638050105 is about 40472.8316899127. The cubic root of 1638050105 is about 1178.8061527438.

Adding to 1638050105 its reverse (5010508361), we get a palindrome (6648558466).

The spelling of 1638050105 in words is "one billion, six hundred thirty-eight million, fifty thousand, one hundred five".