2518420417 has 4 divisors (see below), whose sum is σ = 2650968880. Its totient is φ = 2385871956.

The previous prime is 2518420393. The next prime is 2518420453. The reversal of 2518420417 is 7140248152.

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 a de Polignac number, because none of the positive numbers 2^k-2518420417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2510420417) 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, 66274203 + ... + 66274240.

It is an arithmetic number, because the mean of its divisors is an integer number (662742220).

Almost surely, 2^2518420417 is an apocalyptic number.

It is an amenable number.

2518420417 is a deficient number, since it is larger than the sum of its proper divisors (132548463).

2518420417 is a wasteful number, since it uses less digits than its factorization.

2518420417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132548462.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 2518420417 is about 50183.8661025633. The cubic root of 2518420417 is about 1360.5340349731.

Adding to 2518420417 its reverse (7140248152), we get a palindrome (9658668569).

The spelling of 2518420417 in words is "two billion, five hundred eighteen million, four hundred twenty thousand, four hundred seventeen".