1133131998 has 8 divisors (see below), whose sum is σ = 2266264008. Its totient is φ = 377710664.

The previous prime is 1133131931. The next prime is 1133131999. The reversal of 1133131998 is 8991313311.

It is a sphenic number, since it is the product of 3 distinct primes.

1133131998 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133131999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94427661 + ... + 94427672.

It is an arithmetic number, because the mean of its divisors is an integer number (283283001).

Almost surely, 2^1133131998 is an apocalyptic number.

1133131998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1133131998 is a wasteful number, since it uses less digits than its factorization.

1133131998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188855338.

The product of its digits is 17496, while the sum is 39.

The square root of 1133131998 is about 33662.0260531062. The cubic root of 1133131998 is about 1042.5418587015.

The spelling of 1133131998 in words is "one billion, one hundred thirty-three million, one hundred thirty-one thousand, nine hundred ninety-eight".