1798992000 has 576 divisors, whose sum is σ = 7189280280. Its totient is φ = 428544000.

The previous prime is 1798991959. The next prime is 1798992007. The reversal of 1798992000 is 2998971.

It can be written as a sum of positive squares in 4 ways, for example, as 244109376 + 1554882624 = 15624^2 + 39432^2 .

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1798992007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 58031985 + ... + 58032015.

Almost surely, 2^1798992000 is an apocalyptic number.

1798992000 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 1798992000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3594640140).

1798992000 is an abundant number, since it is smaller than the sum of its proper divisors (5390288280).

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

1798992000 is a wasteful number, since it uses less digits than its factorization.

1798992000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 1798992000 is about 42414.5258136879. The cubic root of 1798992000 is about 1216.2132878408.

The spelling of 1798992000 in words is "one billion, seven hundred ninety-eight million, nine hundred ninety-two thousand".