19345742938 has 16 divisors (see below), whose sum is σ = 29438830080. Its totient is φ = 9533240496.

The previous prime is 19345742917. The next prime is 19345742959. The reversal of 19345742938 is 83924754391.

It is an interprime number because it is at equal distance from previous prime (19345742917) and next prime (19345742959).

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 in 7 ways as a sum of consecutive naturals, for example, 21906 + ... + 197917.

It is an arithmetic number, because the mean of its divisors is an integer number (1839926880).

Almost surely, 2^19345742938 is an apocalyptic number.

19345742938 is a deficient number, since it is larger than the sum of its proper divisors (10093087142).

19345742938 is a wasteful number, since it uses less digits than its factorization.

19345742938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220461.

The product of its digits is 6531840, while the sum is 55.

The spelling of 19345742938 in words is "nineteen billion, three hundred forty-five million, seven hundred forty-two thousand, nine hundred thirty-eight".