1798479391800 has 768 divisors, whose sum is σ = 7281433958400. Its totient is φ = 356356915200.

The previous prime is 1798479391771. The next prime is 1798479391829. The reversal of 1798479391800 is 81939748971.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1798479391771) and next prime (1798479391829).

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 483590341 + ... + 483594059.

It is an arithmetic number, because the mean of its divisors is an integer number (9481033800).

Almost surely, 2^{1798479391800} is an apocalyptic number.

1798479391800 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 1798479391800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3640716979200).

1798479391800 is an abundant number, since it is smaller than the sum of its proper divisors (5482954566600).

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

1798479391800 is a wasteful number, since it uses less digits than its factorization.

1798479391800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4296 (or 4287 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 66.

The spelling of 1798479391800 in words is "one trillion, seven hundred ninety-eight billion, four hundred seventy-nine million, three hundred ninety-one thousand, eight hundred".