19388430050 has 48 divisors (see below), whose sum is σ = 39568485312. Its totient is φ = 7009550400.

The previous prime is 19388430041. The next prime is 19388430077. The reversal of 19388430050 is 5003488391.

It is a super-2 number, since 2×19388430050² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6734 + ... + 197033.

It is an arithmetic number, because the mean of its divisors is an integer number (824343444).

Almost surely, 2^19388430050 is an apocalyptic number.

19388430050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19388430050 is an abundant number, since it is smaller than the sum of its proper divisors (20180055262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19388430050 is a wasteful number, since it uses less digits than its factorization.

19388430050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203963 (or 203958 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 19388430050 in words is "nineteen billion, three hundred eighty-eight million, four hundred thirty thousand, fifty".