19457838028 has 24 divisors (see below), whose sum is σ = 35274002400. Its totient is φ = 9380477568.

The previous prime is 19457837953. The next prime is 19457838067. The reversal of 19457838028 is 82083875491.

It is a self number, because there is not a number n which added to its sum of digits gives 19457838028.

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, 31033 + ... + 199696.

It is an arithmetic number, because the mean of its divisors is an integer number (1469750100).

Almost surely, 2^19457838028 is an apocalyptic number.

It is an amenable number.

19457838028 is a deficient number, since it is larger than the sum of its proper divisors (15816164372).

19457838028 is a wasteful number, since it uses less digits than its factorization.

19457838028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231489 (or 231487 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 55.

The spelling of 19457838028 in words is "nineteen billion, four hundred fifty-seven million, eight hundred thirty-eight thousand, twenty-eight".