1774898056009 has 9 divisors (see below), whose sum is σ = 1921949785269. Its totient is φ = 1638351449280.

The previous prime is 1774898056007. The next prime is 1774898056037. The reversal of 1774898056009 is 9006508984771.

The square root of 1774898056009 is 1332253.

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

It can be written as a sum of positive squares in 4 ways, for example, as 195784125625 + 1579113930384 = 442475^2 + 1256628^2 .

It is not a de Polignac number, because 1774898056009 - 2¹ = 1774898056007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1774898056007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 17268049 + ... + 17370529.

It is an arithmetic number, because the mean of its divisors is an integer number (213549976141).

Almost surely, 2^{1774898056009} is an apocalyptic number.

1774898056009 is the 1332253-rd square number.

1774898056009 is the 666127-th centered octagonal number.

It is an amenable number.

1774898056009 is a deficient number, since it is larger than the sum of its proper divisors (147051729260).

1774898056009 is an frugal number, since it uses more digits than its factorization.

1774898056009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204988 (or 102494 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 64.

Multiplying 1774898056009 by its sum of digits (64), we get a square (113593475584576 = 10658024²).

The spelling of 1774898056009 in words is "one trillion, seven hundred seventy-four billion, eight hundred ninety-eight million, fifty-six thousand, nine".