1799187813361 has 8 divisors (see below), whose sum is σ = 1809632669544. Its totient is φ = 1788743473920.

The previous prime is 1799187813347. The next prime is 1799187813421. The reversal of 1799187813361 is 1633187819971.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 471530795761 + 1327657017600 = 686681^2 + 1152240^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1799187813361 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1799187813293 and 1799187813302.

It is not an unprimeable number, because it can be changed into a prime (1799187873361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8534971 + ... + 8743231.

It is an arithmetic number, because the mean of its divisors is an integer number (226204083693).

Almost surely, 2^{1799187813361} is an apocalyptic number.

It is an amenable number.

1799187813361 is a deficient number, since it is larger than the sum of its proper divisors (10444856183).

1799187813361 is a wasteful number, since it uses less digits than its factorization.

1799187813361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258371.

The product of its digits is 13716864, while the sum is 64.

The spelling of 1799187813361 in words is "one trillion, seven hundred ninety-nine billion, one hundred eighty-seven million, eight hundred thirteen thousand, three hundred sixty-one".