1161552198 has 16 divisors (see below), whose sum is σ = 2332362816. Its totient is φ = 385641000.

The previous prime is 1161552193. The next prime is 1161552209. The reversal of 1161552198 is 8912551611.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161552191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384136 + ... + 387147.

It is an arithmetic number, because the mean of its divisors is an integer number (145772676).

Almost surely, 2^1161552198 is an apocalyptic number.

1161552198 is an abundant number, since it is smaller than the sum of its proper divisors (1170810618).

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

1161552198 is a wasteful number, since it uses less digits than its factorization.

1161552198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771539.

The product of its digits is 21600, while the sum is 39.

The square root of 1161552198 is about 34081.5521653577. The cubic root of 1161552198 is about 1051.1860212835.

The spelling of 1161552198 in words is "one billion, one hundred sixty-one million, five hundred fifty-two thousand, one hundred ninety-eight".