1798085219329 has 9 divisors (see below), whose sum is σ = 2091661072131. Its totient is φ = 1541207856720.

The previous prime is 1798085219321. The next prime is 1798085219389. The reversal of 1798085219329 is 9239125808971.

It is a happy number.

The square root of 1798085219329 is 1340927.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 179287036929 + 1618798182400 = 423423^2 + 1272320^2 .

It is not a de Polignac number, because 1798085219329 - 2³ = 1798085219321 is a prime.

It is a super-2 number, since 2×1798085219329² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1798085219321) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9290709 + ... + 9482269.

Almost surely, 2^{1798085219329} is an apocalyptic number.

1798085219329 is the 1340927-th square number.

1798085219329 is the 670464-th centered octagonal number.

It is an amenable number.

1798085219329 is a deficient number, since it is larger than the sum of its proper divisors (293575852802).

1798085219329 is an frugal number, since it uses more digits than its factorization.

1798085219329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383136 (or 191568 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 64.

Multiplying 1798085219329 by its sum of digits (64), we get a square (115077454037056 = 10727416²).

The spelling of 1798085219329 in words is "one trillion, seven hundred ninety-eight billion, eighty-five million, two hundred nineteen thousand, three hundred twenty-nine".