1804962693121 has 27 divisors (see below), whose sum is σ = 2136497728131. Its totient is φ = 1520421127344.

The previous prime is 1804962693109. The next prime is 1804962693151. The reversal of 1804962693121 is 1213962694081.

The square root of 1804962693121 is 1343489.

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., 1796095834225 + 8866858896 = 1340185^2 + 94164^2 .

It is not a de Polignac number, because 1804962693121 - 2⁵ = 1804962693089 is a prime.

It is a super-2 number, since 2×1804962693121² (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 (1804962693151) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 554859331 + ... + 554862583.

Almost surely, 2^{1804962693121} is an apocalyptic number.

1804962693121 is the 1343489-th square number.

1804962693121 is the 671745-th centered octagonal number.

It is an amenable number.

1804962693121 is a deficient number, since it is larger than the sum of its proper divisors (331535035010).

1804962693121 is an frugal number, since it uses more digits than its factorization.

1804962693121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6638 (or 3319 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 52.

The spelling of 1804962693121 in words is "one trillion, eight hundred four billion, nine hundred sixty-two million, six hundred ninety-three thousand, one hundred twenty-one".