1161083505 has 8 divisors (see below), whose sum is σ = 1857733632. Its totient is φ = 619244528.

The previous prime is 1161083477. The next prime is 1161083509. The reversal of 1161083505 is 5053801611.

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

It is a cyclic number.

It is not a de Polignac number, because 1161083505 - 2²⁶ = 1093974641 is a prime.

It is a super-2 number, since 2×1161083505² = 2696229811166170050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1161083509) 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, 38702769 + ... + 38702798.

It is an arithmetic number, because the mean of its divisors is an integer number (232216704).

Almost surely, 2^1161083505 is an apocalyptic number.

1161083505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1161083505 is a deficient number, since it is larger than the sum of its proper divisors (696650127).

1161083505 is an equidigital number, since it uses as much as digits as its factorization.

1161083505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77405575.

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 1161083505 is about 34074.6754203177. The cubic root of 1161083505 is about 1051.0446157251.

The spelling of 1161083505 in words is "one billion, one hundred sixty-one million, eighty-three thousand, five hundred five".