19158719144 has 32 divisors (see below), whose sum is σ = 37306679520. Its totient is φ = 9216922176.

The previous prime is 19158719119. The next prime is 19158719161. The reversal of 19158719144 is 44191785191.

It is a junction number, because it is equal to n+sod(n) for n = 19158719092 and 19158719101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392579 + ... + 438674.

It is an arithmetic number, because the mean of its divisors is an integer number (1165833735).

Almost surely, 2^19158719144 is an apocalyptic number.

It is an amenable number.

19158719144 is a deficient number, since it is larger than the sum of its proper divisors (18147960376).

19158719144 is a wasteful number, since it uses less digits than its factorization.

19158719144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831369 (or 831365 counting only the distinct ones).

The product of its digits is 362880, while the sum is 50.

The spelling of 19158719144 in words is "nineteen billion, one hundred fifty-eight million, seven hundred nineteen thousand, one hundred forty-four".