1162216145 has 4 divisors (see below), whose sum is σ = 1394659380. Its totient is φ = 929772912.

The previous prime is 1162216127. The next prime is 1162216177. The reversal of 1162216145 is 5416122611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 572357776 + 589858369 = 23924^2 + 24287^2 .

It is a cyclic number.

It is not a de Polignac number, because 1162216145 - 2¹⁶ = 1162150609 is a prime.

It is a super-2 number, since 2×1162216145² = 2701492735397322050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116221610 + ... + 116221619.

It is an arithmetic number, because the mean of its divisors is an integer number (348664845).

Almost surely, 2^1162216145 is an apocalyptic number.

It is an amenable number.

1162216145 is a deficient number, since it is larger than the sum of its proper divisors (232443235).

1162216145 is an equidigital number, since it uses as much as digits as its factorization.

1162216145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232443234.

The product of its digits is 2880, while the sum is 29.

The square root of 1162216145 is about 34091.2913366449. The cubic root of 1162216145 is about 1051.3862702460.

Adding to 1162216145 its reverse (5416122611), we get a palindrome (6578338756).

The spelling of 1162216145 in words is "one billion, one hundred sixty-two million, two hundred sixteen thousand, one hundred forty-five".