19745348442 has 16 divisors (see below), whose sum is σ = 40558013472. Its totient is φ = 6403896720.

The previous prime is 19745348423. The next prime is 19745348449. The reversal of 19745348442 is 24484354791.

It is not an unprimeable number, because it can be changed into a prime (19745348449) by changing a digit.

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, 44471284 + ... + 44471727.

It is an arithmetic number, because the mean of its divisors is an integer number (2534875842).

Almost surely, 2^19745348442 is an apocalyptic number.

19745348442 is an abundant number, since it is smaller than the sum of its proper divisors (20812665030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19745348442 is a wasteful number, since it uses less digits than its factorization.

19745348442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88943053.

The product of its digits is 3870720, while the sum is 51.

The spelling of 19745348442 in words is "nineteen billion, seven hundred forty-five million, three hundred forty-eight thousand, four hundred forty-two".