2420644437 has 12 divisors (see below), whose sum is σ = 3502198284. Its totient is φ = 1611126720.

The previous prime is 2420644427. The next prime is 2420644439. The reversal of 2420644437 is 7344460242.

2420644437 is a `hidden beast` number, since 2 + 4 + 2 + 0 + 644 + 4 + 3 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 722050641 + 1698593796 = 26871^2 + 41214^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2420644437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2420644439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 213864 + ... + 224897.

It is an arithmetic number, because the mean of its divisors is an integer number (291849857).

Almost surely, 2^2420644437 is an apocalyptic number.

It is an amenable number.

2420644437 is a deficient number, since it is larger than the sum of its proper divisors (1081553847).

2420644437 is a wasteful number, since it uses less digits than its factorization.

2420644437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439380 (or 439377 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 36.

The square root of 2420644437 is about 49200.0450914428. The cubic root of 2420644437 is about 1342.6938525559.

The spelling of 2420644437 in words is "two billion, four hundred twenty million, six hundred forty-four thousand, four hundred thirty-seven".