1799187813420 has 192 divisors, whose sum is σ = 5480412981120. Its totient is φ = 439181180928.

The previous prime is 1799187813347. The next prime is 1799187813421. The reversal of 1799187813420 is 243187819971.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (1799187813421) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 112042032 + ... + 112058088.

It is an arithmetic number, because the mean of its divisors is an integer number (28543817610).

Almost surely, 2^{1799187813420} is an apocalyptic number.

1799187813420 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 1799187813420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2740206490560).

1799187813420 is an abundant number, since it is smaller than the sum of its proper divisors (3681225167700).

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

1799187813420 is a wasteful number, since it uses less digits than its factorization.

1799187813420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19092 (or 19090 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 60.

The spelling of 1799187813420 in words is "one trillion, seven hundred ninety-nine billion, one hundred eighty-seven million, eight hundred thirteen thousand, four hundred twenty".