1161500105 has 8 divisors (see below), whose sum is σ = 1394334600. Its totient is φ = 928843776.

The previous prime is 1161500099. The next prime is 1161500117. The reversal of 1161500105 is 5010051611.

It can be written as a sum of positive squares in 4 ways, for example, as 73753744 + 1087746361 = 8588^2 + 32981^2 .

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 1161500105 - 2⁴ = 1161500089 is a prime.

It is a super-2 number, since 2×1161500105² = 2698164987830022050, which contains 22 as substring.

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, 29750 + ... + 56639.

It is an arithmetic number, because the mean of its divisors is an integer number (174291825).

Almost surely, 2^1161500105 is an apocalyptic number.

It is an amenable number.

1161500105 is a deficient number, since it is larger than the sum of its proper divisors (232834495).

1161500105 is an equidigital number, since it uses as much as digits as its factorization.

1161500105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89083.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 1161500105 is about 34080.7879163613. The cubic root of 1161500105 is about 1051.1703066068.

Adding to 1161500105 its reverse (5010051611), we get a palindrome (6171551716).

The spelling of 1161500105 in words is "one billion, one hundred sixty-one million, five hundred thousand, one hundred five".