198826037 has 2 divisors, whose sum is σ = 198826038. Its totient is φ = 198826036.

The previous prime is 198825989. The next prime is 198826039. The reversal of 198826037 is 730628891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174609796 + 24216241 = 13214^2 + 4921^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198826037 is a prime.

Together with 198826039, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198826039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99413018 + 99413019.

It is an arithmetic number, because the mean of its divisors is an integer number (99413019).

Almost surely, 2^198826037 is an apocalyptic number.

It is an amenable number.

198826037 is a deficient number, since it is larger than the sum of its proper divisors (1).

198826037 is an equidigital number, since it uses as much as digits as its factorization.

198826037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 198826037 is about 14100.5686764754. The cubic root of 198826037 is about 583.6570719625.

The spelling of 198826037 in words is "one hundred ninety-eight million, eight hundred twenty-six thousand, thirty-seven".