1804137411553 has 4 divisors (see below), whose sum is σ = 1804148101780. Its totient is φ = 1804126721328.

The previous prime is 1804137411509. The next prime is 1804137411563. The reversal of 1804137411553 is 3551147314081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1476825271009 + 327312140544 = 1215247^2 + 572112^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1804137411553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1804137411563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5087838 + ... + 5430871.

It is an arithmetic number, because the mean of its divisors is an integer number (451037025445).

Almost surely, 2^{1804137411553} is an apocalyptic number.

It is an amenable number.

1804137411553 is a deficient number, since it is larger than the sum of its proper divisors (10690227).

1804137411553 is a wasteful number, since it uses less digits than its factorization.

1804137411553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10690226.

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 1804137411553 in words is "one trillion, eight hundred four billion, one hundred thirty-seven million, four hundred eleven thousand, five hundred fifty-three".