19224745990 has 8 divisors (see below), whose sum is σ = 34604542800. Its totient is φ = 7689898392.

The previous prime is 19224745979. The next prime is 19224745993. The reversal of 19224745990 is 9954742291.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19224745993) 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, 961237290 + ... + 961237309.

It is an arithmetic number, because the mean of its divisors is an integer number (4325567850).

Almost surely, 2^19224745990 is an apocalyptic number.

19224745990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19224745990 is a deficient number, since it is larger than the sum of its proper divisors (15379796810).

19224745990 is a wasteful number, since it uses less digits than its factorization.

19224745990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922474606.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 19224745990 in words is "nineteen billion, two hundred twenty-four million, seven hundred forty-five thousand, nine hundred ninety".