4138817897 has 4 divisors (see below), whose sum is σ = 4235069520. Its totient is φ = 4042566276.

The previous prime is 4138817833. The next prime is 4138817929. The reversal of 4138817897 is 7987188314.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4138817897 - 2⁶ = 4138817833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4138897897) 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, 48125747 + ... + 48125832.

It is an arithmetic number, because the mean of its divisors is an integer number (1058767380).

Almost surely, 2^4138817897 is an apocalyptic number.

It is an amenable number.

4138817897 is a deficient number, since it is larger than the sum of its proper divisors (96251623).

4138817897 is an equidigital number, since it uses as much as digits as its factorization.

4138817897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96251622.

The product of its digits is 2709504, while the sum is 56.

The square root of 4138817897 is about 64333.6451400043. The cubic root of 4138817897 is about 1605.5559319368. Note that the first 3 decimals are identical.

The spelling of 4138817897 in words is "four billion, one hundred thirty-eight million, eight hundred seventeen thousand, eight hundred ninety-seven".