198601519 has 2 divisors, whose sum is σ = 198601520. Its totient is φ = 198601518.

The previous prime is 198601517. The next prime is 198601549. The reversal of 198601519 is 915106891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198601519 - 2¹ = 198601517 is a prime.

It is a super-2 number, since 2×198601519² = 78885126698214722, which contains 22 as substring.

Together with 198601517, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198601517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99300759 + 99300760.

It is an arithmetic number, because the mean of its divisors is an integer number (99300760).

Almost surely, 2^198601519 is an apocalyptic number.

198601519 is a deficient number, since it is larger than the sum of its proper divisors (1).

198601519 is an equidigital number, since it uses as much as digits as its factorization.

198601519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 40.

The square root of 198601519 is about 14092.6051175785. The cubic root of 198601519 is about 583.4372971345.

The spelling of 198601519 in words is "one hundred ninety-eight million, six hundred one thousand, five hundred nineteen".