19143958350 has 48 divisors (see below), whose sum is σ = 51793113600. Its totient is φ = 4640959200.

The previous prime is 19143958343. The next prime is 19143958399. The reversal of 19143958350 is 5385934191.

It is a super-2 number, since 2×19143958350² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 19143958350.

It is a congruent number.

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, 5799550 + ... + 5802849.

It is an arithmetic number, because the mean of its divisors is an integer number (1079023200).

Almost surely, 2^19143958350 is an apocalyptic number.

19143958350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19143958350 is an abundant number, since it is smaller than the sum of its proper divisors (32649155250).

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

19143958350 is a wasteful number, since it uses less digits than its factorization.

19143958350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11602425 (or 11602420 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 48.

The spelling of 19143958350 in words is "nineteen billion, one hundred forty-three million, nine hundred fifty-eight thousand, three hundred fifty".