1133581398 has 16 divisors (see below), whose sum is σ = 2267718336. Its totient is φ = 377767880.

The previous prime is 1133581387. The next prime is 1133581417. The reversal of 1133581398 is 8931853311.

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, 6253 + ... + 48023.

It is an arithmetic number, because the mean of its divisors is an integer number (141732396).

Almost surely, 2^1133581398 is an apocalyptic number.

1133581398 is an abundant number, since it is smaller than the sum of its proper divisors (1134136938).

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

1133581398 is a wasteful number, since it uses less digits than its factorization.

1133581398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46299.

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

The square root of 1133581398 is about 33668.7005689260. The cubic root of 1133581398 is about 1042.6796644727.

The spelling of 1133581398 in words is "one billion, one hundred thirty-three million, five hundred eighty-one thousand, three hundred ninety-eight".