19882938550 has 24 divisors (see below), whose sum is σ = 38928702600. Its totient is φ = 7534586880.

The previous prime is 19882938541. The next prime is 19882938553. The reversal of 19882938550 is 5583928891.

It is a super-2 number, since 2×19882938550² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19882938553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10463755 + ... + 10465654.

It is an arithmetic number, because the mean of its divisors is an integer number (1622029275).

Almost surely, 2^19882938550 is an apocalyptic number.

19882938550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19882938550 is a deficient number, since it is larger than the sum of its proper divisors (19045764050).

19882938550 is a wasteful number, since it uses less digits than its factorization.

19882938550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20929440 (or 20929435 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 58.

The spelling of 19882938550 in words is "nineteen billion, eight hundred eighty-two million, nine hundred thirty-eight thousand, five hundred fifty".