19140117750 has 160 divisors (see below), whose sum is σ = 57642320736. Its totient is φ = 4711348800.

The previous prime is 19140117727. The next prime is 19140117779. The reversal of 19140117750 is 5771104191.

19140117750 is a `hidden beast` number, since 191 + 401 + 17 + 7 + 50 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 226897 + ... + 299603.

Almost surely, 2^19140117750 is an apocalyptic number.

19140117750 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 19140117750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28821160368).

19140117750 is an abundant number, since it is smaller than the sum of its proper divisors (38502202986).

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

19140117750 is a wasteful number, since it uses less digits than its factorization.

19140117750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72749 (or 72730 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 36.

The spelling of 19140117750 in words is "nineteen billion, one hundred forty million, one hundred seventeen thousand, seven hundred fifty".