1161538358 has 8 divisors (see below), whose sum is σ = 1744082928. Its totient is φ = 580177384.

The previous prime is 1161538351. The next prime is 1161538409. The reversal of 1161538358 is 8538351611.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161538351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293441 + ... + 297372.

It is an arithmetic number, because the mean of its divisors is an integer number (218010366).

Almost surely, 2^1161538358 is an apocalyptic number.

1161538358 is a deficient number, since it is larger than the sum of its proper divisors (582544570).

1161538358 is an equidigital number, since it uses as much as digits as its factorization.

1161538358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591798.

The product of its digits is 86400, while the sum is 41.

The square root of 1161538358 is about 34081.3491223572. The cubic root of 1161538358 is about 1051.1818462746.

Adding to 1161538358 its reverse (8538351611), we get a palindrome (9699889969).

The spelling of 1161538358 in words is "one billion, one hundred sixty-one million, five hundred thirty-eight thousand, three hundred fifty-eight".