198412519 has 16 divisors (see below), whose sum is σ = 208811520. Its totient is φ = 188285440.

The previous prime is 198412507. The next prime is 198412523. The reversal of 198412519 is 915214891.

It is a cyclic number.

It is not a de Polignac number, because 198412519 - 2⁷ = 198412391 is a prime.

It is a super-2 number, since 2×198412519² = 78735055391850722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198412589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 625749 + ... + 626065.

It is an arithmetic number, because the mean of its divisors is an integer number (13050720).

Almost surely, 2^198412519 is an apocalyptic number.

198412519 is a deficient number, since it is larger than the sum of its proper divisors (10399001).

198412519 is a wasteful number, since it uses less digits than its factorization.

198412519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650.

The product of its digits is 25920, while the sum is 40.

The square root of 198412519 is about 14085.8978769548. The cubic root of 198412519 is about 583.2521615126.

The spelling of 198412519 in words is "one hundred ninety-eight million, four hundred twelve thousand, five hundred nineteen".