198136895 has 12 divisors (see below), whose sum is σ = 261345000. Its totient is φ = 144099120.

The previous prime is 198136859. The next prime is 198136901. The reversal of 198136895 is 598631891.

It is a happy number.

It is not a de Polignac number, because 198136895 - 2⁶ = 198136831 is a prime.

It is a super-3 number, since 3×198136895³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 163145 + ... + 164354.

It is an arithmetic number, because the mean of its divisors is an integer number (21778750).

Almost surely, 2^198136895 is an apocalyptic number.

198136895 is a deficient number, since it is larger than the sum of its proper divisors (63208105).

198136895 is a wasteful number, since it uses less digits than its factorization.

198136895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327526 (or 327515 counting only the distinct ones).

The product of its digits is 466560, while the sum is 50.

The square root of 198136895 is about 14076.1107909820. The cubic root of 198136895 is about 582.9819621807.

The spelling of 198136895 in words is "one hundred ninety-eight million, one hundred thirty-six thousand, eight hundred ninety-five".