133098187 has 4 divisors (see below), whose sum is σ = 133214976. Its totient is φ = 132981400.

The previous prime is 133098181. The next prime is 133098191. The reversal of 133098187 is 781890331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 781890331 = 22787 ⋅34313.

It is a cyclic number.

It is not a de Polignac number, because 133098187 - 2¹⁹ = 132573899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133098181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56668 + ... + 58969.

It is an arithmetic number, because the mean of its divisors is an integer number (33303744).

Almost surely, 2^133098187 is an apocalyptic number.

133098187 is a deficient number, since it is larger than the sum of its proper divisors (116789).

133098187 is a wasteful number, since it uses less digits than its factorization.

133098187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116788.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 133098187 is about 11536.8187556189. The cubic root of 133098187 is about 510.5724534498.

The spelling of 133098187 in words is "one hundred thirty-three million, ninety-eight thousand, one hundred eighty-seven".