198035797 has 2 divisors, whose sum is σ = 198035798. Its totient is φ = 198035796.

The previous prime is 198035767. The next prime is 198035833. The reversal of 198035797 is 797530891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193515921 + 4519876 = 13911^2 + 2126^2 .

It is an emirp because it is prime and its reverse (797530891) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198035797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198035797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198035767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99017898 + 99017899.

It is an arithmetic number, because the mean of its divisors is an integer number (99017899).

Almost surely, 2^198035797 is an apocalyptic number.

It is an amenable number.

198035797 is a deficient number, since it is larger than the sum of its proper divisors (1).

198035797 is an equidigital number, since it uses as much as digits as its factorization.

198035797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 476280, while the sum is 49.

The square root of 198035797 is about 14072.5192129910. The cubic root of 198035797 is about 582.8827911210.

It can be divided in two parts, 19803 and 5797, that added together give a square (25600 = 160²).

The spelling of 198035797 in words is "one hundred ninety-eight million, thirty-five thousand, seven hundred ninety-seven".