901135198 has 4 divisors (see below), whose sum is σ = 1351702800. Its totient is φ = 450567598.

The previous prime is 901135181. The next prime is 901135199. The reversal of 901135198 is 891531109.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (901135199) 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 as a sum of consecutive naturals, namely, 225283798 + ... + 225283801.

It is an arithmetic number, because the mean of its divisors is an integer number (337925700).

Almost surely, 2^901135198 is an apocalyptic number.

901135198 is a deficient number, since it is larger than the sum of its proper divisors (450567602).

901135198 is a wasteful number, since it uses less digits than its factorization.

901135198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450567601.

The product of its (nonzero) digits is 9720, while the sum is 37.

The square root of 901135198 is about 30018.9140043407. The cubic root of 901135198 is about 965.8951479855.

The spelling of 901135198 in words is "nine hundred one million, one hundred thirty-five thousand, one hundred ninety-eight".