19440750497 has 4 divisors (see below), whose sum is σ = 22218000576. Its totient is φ = 16663500420.

The previous prime is 19440750463. The next prime is 19440750517. The reversal of 19440750497 is 79405704491.

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 not a de Polignac number, because 19440750497 - 2¹⁶ = 19440684961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19440750397) 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, 1388625029 + ... + 1388625042.

It is an arithmetic number, because the mean of its divisors is an integer number (5554500144).

Almost surely, 2^19440750497 is an apocalyptic number.

It is an amenable number.

19440750497 is a deficient number, since it is larger than the sum of its proper divisors (2777250079).

19440750497 is an equidigital number, since it uses as much as digits as its factorization.

19440750497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777250078.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 19440750497 in words is "nineteen billion, four hundred forty million, seven hundred fifty thousand, four hundred ninety-seven".