19749376748 has 24 divisors (see below), whose sum is σ = 36646725024. Its totient is φ = 9280544000.

The previous prime is 19749376729. The next prime is 19749376781. The reversal of 19749376748 is 84767394791.

It is an unprimeable number.

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, 159488 + ... + 254823.

It is an arithmetic number, because the mean of its divisors is an integer number (1526946876).

Almost surely, 2^19749376748 is an apocalyptic number.

It is an amenable number.

19749376748 is a deficient number, since it is larger than the sum of its proper divisors (16897348276).

19749376748 is a wasteful number, since it uses less digits than its factorization.

19749376748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415033 (or 415031 counting only the distinct ones).

The product of its digits is 64012032, while the sum is 65.

The spelling of 19749376748 in words is "nineteen billion, seven hundred forty-nine million, three hundred seventy-six thousand, seven hundred forty-eight".