2138415017 has 4 divisors (see below), whose sum is σ = 2146735956. Its totient is φ = 2130094080.

The previous prime is 2138414987. The next prime is 2138415067. The reversal of 2138415017 is 7105148312.

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 1917476521 + 220938496 = 43789^2 + 14864^2 .

It is a cyclic number.

It is not a de Polignac number, because 2138415017 - 2⁶ = 2138414953 is a prime.

It is a super-2 number, since 2×2138415017² = 9145637569862220578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2138415067) 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, 4160084 + ... + 4160597.

It is an arithmetic number, because the mean of its divisors is an integer number (536683989).

Almost surely, 2^2138415017 is an apocalyptic number.

It is an amenable number.

2138415017 is a deficient number, since it is larger than the sum of its proper divisors (8320939).

2138415017 is an equidigital number, since it uses as much as digits as its factorization.

2138415017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8320938.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 2138415017 is about 46242.9996540017. Note that the first 3 decimals coincide. The cubic root of 2138415017 is about 1288.3405172049.

Adding to 2138415017 its sum of digits (32), we get a square (2138415049 = 46243²).

The spelling of 2138415017 in words is "two billion, one hundred thirty-eight million, four hundred fifteen thousand, seventeen".