19311796828 has 24 divisors (see below), whose sum is σ = 34960633344. Its totient is φ = 9324380400.

The previous prime is 19311796789. The next prime is 19311796837. The reversal of 19311796828 is 82869711391.

It is a happy number.

It is a congruent number.

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, 108838 + ... + 224653.

It is an arithmetic number, because the mean of its divisors is an integer number (1456693056).

Almost surely, 2^19311796828 is an apocalyptic number.

It is an amenable number.

19311796828 is a deficient number, since it is larger than the sum of its proper divisors (15648836516).

19311796828 is a wasteful number, since it uses less digits than its factorization.

19311796828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333993 (or 333991 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 55.

The spelling of 19311796828 in words is "nineteen billion, three hundred eleven million, seven hundred ninety-six thousand, eight hundred twenty-eight".