1798090201 has 2 divisors, whose sum is σ = 1798090202. Its totient is φ = 1798090200.

The previous prime is 1798090127. The next prime is 1798090249. The reversal of 1798090201 is 1020908971.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1585950976 + 212139225 = 39824^2 + 14565^2 .

It is an emirp because it is prime and its reverse (1020908971) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1798090201 - 2²³ = 1789701593 is a prime.

It is not a weakly prime, because it can be changed into another prime (1798090291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 899045100 + 899045101.

It is an arithmetic number, because the mean of its divisors is an integer number (899045101).

Almost surely, 2^1798090201 is an apocalyptic number.

It is an amenable number.

1798090201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1798090201 is an equidigital number, since it uses as much as digits as its factorization.

1798090201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 1798090201 is about 42403.8937009327. The cubic root of 1798090201 is about 1216.0100326767.

The spelling of 1798090201 in words is "one billion, seven hundred ninety-eight million, ninety thousand, two hundred one".