1841500566361 has 9 divisors (see below), whose sum is σ = 1844680111743. Its totient is φ = 1838326498920.

The previous prime is 1841500566251. The next prime is 1841500566371. The reversal of 1841500566361 is 1636650051481.

The square root of 1841500566361 is 1357019.

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., 1212683285961 + 628817280400 = 1101219^2 + 792980^2 .

It is not a de Polignac number, because 1841500566361 - 2⁷ = 1841500566233 is a prime.

It is a super-2 number, since 2×1841500566361² (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 (1841500566371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1439796520 + ... + 1439797798.

Almost surely, 2^{1841500566361} is an apocalyptic number.

1841500566361 is the 1357019-th square number.

1841500566361 is the 678510-th centered octagonal number.

It is an amenable number.

1841500566361 is a deficient number, since it is larger than the sum of its proper divisors (3179545382).

1841500566361 is an frugal number, since it uses more digits than its factorization.

1841500566361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4680 (or 2340 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 1841500566361 in words is "one trillion, eight hundred forty-one billion, five hundred million, five hundred sixty-six thousand, three hundred sixty-one".