2420891768 has 8 divisors (see below), whose sum is σ = 4539172080. Its totient is φ = 1210445880.

The previous prime is 2420891743. The next prime is 2420891777. The reversal of 2420891768 is 8671980242.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 151305728 + ... + 151305743.

It is an arithmetic number, because the mean of its divisors is an integer number (567396510).

Almost surely, 2^2420891768 is an apocalyptic number.

It is an amenable number.

2420891768 is a deficient number, since it is larger than the sum of its proper divisors (2118280312).

2420891768 is a wasteful number, since it uses less digits than its factorization.

2420891768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302611477 (or 302611473 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 2420891768 is about 49202.5585513599. The cubic root of 2420891768 is about 1342.7395812192.

The spelling of 2420891768 in words is "two billion, four hundred twenty million, eight hundred ninety-one thousand, seven hundred sixty-eight".