16019193540 has 192 divisors, whose sum is σ = 51932160000. Its totient is φ = 3613953024.

The previous prime is 16019193539. The next prime is 16019193557. The reversal of 16019193540 is 4539191061.

It is a super-2 number, since 2×16019193540² (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 63 ways as a sum of consecutive naturals, for example, 11449761 + ... + 11451159.

It is an arithmetic number, because the mean of its divisors is an integer number (270480000).

Almost surely, 2^16019193540 is an apocalyptic number.

16019193540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16019193540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25966080000).

16019193540 is an abundant number, since it is smaller than the sum of its proper divisors (35912966460).

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

16019193540 is a wasteful number, since it uses less digits than its factorization.

16019193540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754 (or 1752 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 39.

The spelling of 16019193540 in words is "sixteen billion, nineteen million, one hundred ninety-three thousand, five hundred forty".