190051800840 has 288 divisors, whose sum is σ = 714660710400. Its totient is φ = 43648070400.

The previous prime is 190051800823. The next prime is 190051800847. The reversal of 190051800840 is 48008150091.

It is a super-2 number, since 2×190051800840² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 190051800795 and 190051800804.

It is not an unprimeable number, because it can be changed into a prime (190051800847) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 712825 + ... + 942455.

It is an arithmetic number, because the mean of its divisors is an integer number (2481460800).

Almost surely, 2^190051800840 is an apocalyptic number.

190051800840 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 190051800840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (357330355200).

190051800840 is an abundant number, since it is smaller than the sum of its proper divisors (524608909560).

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

190051800840 is a wasteful number, since it uses less digits than its factorization.

190051800840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229689 (or 229671 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The spelling of 190051800840 in words is "one hundred ninety billion, fifty-one million, eight hundred thousand, eight hundred forty".