19149739148 has 12 divisors (see below), whose sum is σ = 35483340312. Its totient is φ = 9011641920.

The previous prime is 19149739117. The next prime is 19149739159. The reversal of 19149739148 is 84193794191.

It is a junction number, because it is equal to n+sod(n) for n = 19149739093 and 19149739102.

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 3 ways as a sum of consecutive naturals, for example, 140806838 + ... + 140806973.

It is an arithmetic number, because the mean of its divisors is an integer number (2956945026).

Almost surely, 2^19149739148 is an apocalyptic number.

It is an amenable number.

19149739148 is a deficient number, since it is larger than the sum of its proper divisors (16333601164).

19149739148 is a wasteful number, since it uses less digits than its factorization.

19149739148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281613832 (or 281613830 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 56.

The spelling of 19149739148 in words is "nineteen billion, one hundred forty-nine million, seven hundred thirty-nine thousand, one hundred forty-eight".