1798850549 has 2 divisors, whose sum is σ = 1798850550. Its totient is φ = 1798850548.

The previous prime is 1798850531. The next prime is 1798850561. The reversal of 1798850549 is 9450588971.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1062108100 + 736742449 = 32590^2 + 27143^2 .

It is a cyclic number.

It is not a de Polignac number, because 1798850549 - 2¹² = 1798846453 is a prime.

It is a super-3 number, since 3×1798850549³ (a number of 29 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1798850494 and 1798850503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1798850849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 899425274 + 899425275.

It is an arithmetic number, because the mean of its divisors is an integer number (899425275).

Almost surely, 2^1798850549 is an apocalyptic number.

It is an amenable number.

1798850549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1798850549 is an equidigital number, since it uses as much as digits as its factorization.

1798850549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 56.

The square root of 1798850549 is about 42412.8582979266. The cubic root of 1798850549 is about 1216.1814108981.

The spelling of 1798850549 in words is "one billion, seven hundred ninety-eight million, eight hundred fifty thousand, five hundred forty-nine".