1153221198 has 32 divisors (see below), whose sum is σ = 2349285120. Its totient is φ = 377287680.

The previous prime is 1153221191. The next prime is 1153221229. The reversal of 1153221198 is 8911223511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153221191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255118 + ... + 259598.

It is an arithmetic number, because the mean of its divisors is an integer number (73415160).

Almost surely, 2^1153221198 is an apocalyptic number.

1153221198 is an abundant number, since it is smaller than the sum of its proper divisors (1196063922).

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

1153221198 is a wasteful number, since it uses less digits than its factorization.

1153221198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5272.

The product of its digits is 4320, while the sum is 33.

The square root of 1153221198 is about 33959.1106774014. The cubic root of 1153221198 is about 1048.6668486464. Note that the first 3 decimals are identical.

The spelling of 1153221198 in words is "one billion, one hundred fifty-three million, two hundred twenty-one thousand, one hundred ninety-eight".