1814983893 has 6 divisors (see below), whose sum is σ = 2621643414. Its totient is φ = 1209989256.

The previous prime is 1814983867. The next prime is 1814983921. The reversal of 1814983893 is 3983894181.

It can be written as a sum of positive squares in only one way, i.e., 1241716644 + 573267249 = 35238^2 + 23943^2 .

It is not a de Polignac number, because 1814983893 - 2⁸ = 1814983637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1814983823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100832430 + ... + 100832447.

It is an arithmetic number, because the mean of its divisors is an integer number (436940569).

Almost surely, 2^1814983893 is an apocalyptic number.

It is an amenable number.

1814983893 is a deficient number, since it is larger than the sum of its proper divisors (806659521).

1814983893 is a wasteful number, since it uses less digits than its factorization.

1814983893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201664883 (or 201664880 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 54.

The square root of 1814983893 is about 42602.6277710660. The cubic root of 1814983893 is about 1219.8064489600.

The spelling of 1814983893 in words is "one billion, eight hundred fourteen million, nine hundred eighty-three thousand, eight hundred ninety-three".