19327703850 has 288 divisors, whose sum is σ = 66692231424. Its totient is φ = 3900441600.

The previous prime is 19327703833. The next prime is 19327703881. The reversal of 19327703850 is 5830772391.

It is a happy number.

It is a super-2 number, since 2×19327703850² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 19327703796 and 19327703805.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 931590 + ... + 952110.

It is an arithmetic number, because the mean of its divisors is an integer number (231570248).

Almost surely, 2^19327703850 is an apocalyptic number.

19327703850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19327703850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33346115712).

19327703850 is an abundant number, since it is smaller than the sum of its proper divisors (47364527574).

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

19327703850 is a wasteful number, since it uses less digits than its factorization.

19327703850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20582 (or 20574 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The spelling of 19327703850 in words is "nineteen billion, three hundred twenty-seven million, seven hundred three thousand, eight hundred fifty".