2148437717 has 4 divisors (see below), whose sum is σ = 2148598956. Its totient is φ = 2148276480.

The previous prime is 2148437693. The next prime is 2148437723. The reversal of 2148437717 is 7177348412.

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 1687648561 + 460789156 = 41081^2 + 21466^2 .

It is a cyclic number.

It is not a de Polignac number, because 2148437717 - 2¹² = 2148433621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2148437117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58634 + ... + 87947.

It is an arithmetic number, because the mean of its divisors is an integer number (537149739).

Almost surely, 2^2148437717 is an apocalyptic number.

It is an amenable number.

2148437717 is a deficient number, since it is larger than the sum of its proper divisors (161239).

2148437717 is a wasteful number, since it uses less digits than its factorization.

2148437717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161238.

The product of its digits is 263424, while the sum is 44.

The square root of 2148437717 is about 46351.2428851698. The cubic root of 2148437717 is about 1290.3501877638.

The spelling of 2148437717 in words is "two billion, one hundred forty-eight million, four hundred thirty-seven thousand, seven hundred seventeen".