2648391437 has 4 divisors (see below), whose sum is σ = 2787780480. Its totient is φ = 2509002396.

The previous prime is 2648391413. The next prime is 2648391443. The reversal of 2648391437 is 7341938462.

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 2648391437 - 2¹² = 2648387341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2648391391 and 2648391400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2648391407) 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, 69694493 + ... + 69694530.

It is an arithmetic number, because the mean of its divisors is an integer number (696945120).

Almost surely, 2^2648391437 is an apocalyptic number.

It is an amenable number.

2648391437 is a deficient number, since it is larger than the sum of its proper divisors (139389043).

2648391437 is a wasteful number, since it uses less digits than its factorization.

2648391437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139389042.

The product of its digits is 870912, while the sum is 47.

The square root of 2648391437 is about 51462.5245882866. The cubic root of 2648391437 is about 1383.5474502778.

The spelling of 2648391437 in words is "two billion, six hundred forty-eight million, three hundred ninety-one thousand, four hundred thirty-seven".