19493838430 has 16 divisors (see below), whose sum is σ = 38278810224. Its totient is φ = 7088668480.

The previous prime is 19493838421. The next prime is 19493838449. The reversal of 19493838430 is 3483839491.

It is a congruent number.

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, 88608247 + ... + 88608466.

It is an arithmetic number, because the mean of its divisors is an integer number (2392425639).

Almost surely, 2^19493838430 is an apocalyptic number.

19493838430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19493838430 is a deficient number, since it is larger than the sum of its proper divisors (18784971794).

19493838430 is a wasteful number, since it uses less digits than its factorization.

19493838430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177216731.

The product of its (nonzero) digits is 2239488, while the sum is 52.

The spelling of 19493838430 in words is "nineteen billion, four hundred ninety-three million, eight hundred thirty-eight thousand, four hundred thirty".