7924421854 has 16 divisors (see below), whose sum is σ = 13019842800. Its totient is φ = 3600548224.

The previous prime is 7924421849. The next prime is 7924421873. The reversal of 7924421854 is 4581244297.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4017484 + ... + 4019455.

It is an arithmetic number, because the mean of its divisors is an integer number (813740175).

Almost surely, 2^7924421854 is an apocalyptic number.

7924421854 is a deficient number, since it is larger than the sum of its proper divisors (5095420946).

7924421854 is a wasteful number, since it uses less digits than its factorization.

7924421854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8036987.

The product of its digits is 645120, while the sum is 46.

The square root of 7924421854 is about 89019.2218231546. The cubic root of 7924421854 is about 1993.6818828822.

The spelling of 7924421854 in words is "seven billion, nine hundred twenty-four million, four hundred twenty-one thousand, eight hundred fifty-four".