135249198 has 16 divisors (see below), whose sum is σ = 309141120. Its totient is φ = 38642616.

The previous prime is 135249143. The next prime is 135249211. The reversal of 135249198 is 891942531.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 3220219 = 135249198 / (1 + 3 + 5 + 2 + 4 + 9 + 1 + 9 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1610068 + ... + 1610151.

It is an arithmetic number, because the mean of its divisors is an integer number (19321320).

Almost surely, 2^135249198 is an apocalyptic number.

135249198 is an abundant number, since it is smaller than the sum of its proper divisors (173891922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135249198 is a wasteful number, since it uses less digits than its factorization.

135249198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3220231.

The product of its digits is 77760, while the sum is 42.

The square root of 135249198 is about 11629.6688688887. The cubic root of 135249198 is about 513.3082363435.

It can be divided in two parts, 13524 and 9198, that added together give a palindrome (22722).

The spelling of 135249198 in words is "one hundred thirty-five million, two hundred forty-nine thousand, one hundred ninety-eight".