198526081 has 8 divisors (see below), whose sum is σ = 214385024. Its totient is φ = 182751120.

The previous prime is 198526057. The next prime is 198526103. The reversal of 198526081 is 180625891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 198526081 - 2¹¹ = 198524033 is a prime.

It is a super-2 number, since 2×198526081² = 78825209674437122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198526021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16035 + ... + 25576.

It is an arithmetic number, because the mean of its divisors is an integer number (26798128).

Almost surely, 2^198526081 is an apocalyptic number.

It is an amenable number.

198526081 is a deficient number, since it is larger than the sum of its proper divisors (15858943).

198526081 is a wasteful number, since it uses less digits than its factorization.

198526081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41991.

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 198526081 is about 14089.9283532600. The cubic root of 198526081 is about 583.3634156641.

The spelling of 198526081 in words is "one hundred ninety-eight million, five hundred twenty-six thousand, eighty-one".