1808958391194 has 32 divisors (see below), whose sum is σ = 3650111608320. Its totient is φ = 597620846592.

The previous prime is 1808958391189. The next prime is 1808958391213. The reversal of 1808958391194 is 4911938598081.

It is a super-2 number, since 2×1808958391194² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17261847 + ... + 17366325.

It is an arithmetic number, because the mean of its divisors is an integer number (114065987760).

Almost surely, 2^{1808958391194} is an apocalyptic number.

1808958391194 is an abundant number, since it is smaller than the sum of its proper divisors (1841153217126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1808958391194 is a wasteful number, since it uses less digits than its factorization.

1808958391194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130134.

The product of its (nonzero) digits is 22394880, while the sum is 66.

The spelling of 1808958391194 in words is "one trillion, eight hundred eight billion, nine hundred fifty-eight million, three hundred ninety-one thousand, one hundred ninety-four".