1798387873 has 2 divisors, whose sum is σ = 1798387874. Its totient is φ = 1798387872.

The previous prime is 1798387861. The next prime is 1798387901. The reversal of 1798387873 is 3787838971.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1642437729 + 155950144 = 40527^2 + 12488^2 .

It is a cyclic number.

It is not a de Polignac number, because 1798387873 - 2²¹ = 1796290721 is a prime.

It is not a weakly prime, because it can be changed into another prime (1798307873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 899193936 + 899193937.

It is an arithmetic number, because the mean of its divisors is an integer number (899193937).

Almost surely, 2^1798387873 is an apocalyptic number.

It is an amenable number.

1798387873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1798387873 is an equidigital number, since it uses as much as digits as its factorization.

1798387873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14224896, while the sum is 61.

The square root of 1798387873 is about 42407.4035163673. The cubic root of 1798387873 is about 1216.0771320479.

The spelling of 1798387873 in words is "one billion, seven hundred ninety-eight million, three hundred eighty-seven thousand, eight hundred seventy-three".