1808755371044 has 6 divisors (see below), whose sum is σ = 3165321899334. Its totient is φ = 904377685520.

The previous prime is 1808755371037. The next prime is 1808755371047. The reversal of 1808755371044 is 4401735578081.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1257986560000 + 550768811044 = 1121600^2 + 742138^2 .

It is a super-2 number, since 2×1808755371044² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1808755371047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226094421377 + ... + 226094421384.

It is an arithmetic number, because the mean of its divisors is an integer number (527553649889).

Almost surely, 2^{1808755371044} is an apocalyptic number.

It is an amenable number.

1808755371044 is a deficient number, since it is larger than the sum of its proper divisors (1356566528290).

1808755371044 is a wasteful number, since it uses less digits than its factorization.

1808755371044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452188842765 (or 452188842763 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 53.

The spelling of 1808755371044 in words is "one trillion, eight hundred eight billion, seven hundred fifty-five million, three hundred seventy-one thousand, forty-four".