135730198 has 4 divisors (see below), whose sum is σ = 203595300. Its totient is φ = 67865098.

The previous prime is 135730157. The next prime is 135730211. The reversal of 135730198 is 891037531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 891037531 = 17333 ⋅51407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33932548 + ... + 33932551.

It is an arithmetic number, because the mean of its divisors is an integer number (50898825).

Almost surely, 2^135730198 is an apocalyptic number.

135730198 is a deficient number, since it is larger than the sum of its proper divisors (67865102).

135730198 is an equidigital number, since it uses as much as digits as its factorization.

135730198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67865101.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 135730198 is about 11650.3303815815. The cubic root of 135730198 is about 513.9160258885.

The spelling of 135730198 in words is "one hundred thirty-five million, seven hundred thirty thousand, one hundred ninety-eight".