1798501249 has 2 divisors, whose sum is σ = 1798501250. Its totient is φ = 1798501248.

The previous prime is 1798501151. The next prime is 1798501279. The reversal of 1798501249 is 9421058971.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1335390849 + 463110400 = 36543^2 + 21520^2 .

It is a cyclic number.

It is not a de Polignac number, because 1798501249 - 2¹¹ = 1798499201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1798501199 and 1798501208.

It is not a weakly prime, because it can be changed into another prime (1798501279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 899250624 + 899250625.

It is an arithmetic number, because the mean of its divisors is an integer number (899250625).

Almost surely, 2^1798501249 is an apocalyptic number.

It is an amenable number.

1798501249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1798501249 is an equidigital number, since it uses as much as digits as its factorization.

1798501249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 46.

The square root of 1798501249 is about 42408.7402430207. The cubic root of 1798501249 is about 1216.1026866137.

The spelling of 1798501249 in words is "one billion, seven hundred ninety-eight million, five hundred one thousand, two hundred forty-nine".