1165542063 has 16 divisors (see below), whose sum is σ = 1798548480. Its totient is φ = 657592416.

The previous prime is 1165542019. The next prime is 1165542073. The reversal of 1165542063 is 3602455611.

1165542063 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1165542063 - 2⁸ = 1165541807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165542013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349620 + ... + 352937.

It is an arithmetic number, because the mean of its divisors is an integer number (112409280).

Almost surely, 2^1165542063 is an apocalyptic number.

1165542063 is a deficient number, since it is larger than the sum of its proper divisors (633006417).

1165542063 is an equidigital number, since it uses as much as digits as its factorization.

1165542063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702646.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 1165542063 is about 34140.0360720372. The cubic root of 1165542063 is about 1052.3882336657.

Adding to 1165542063 its reverse (3602455611), we get a palindrome (4767997674).

The spelling of 1165542063 in words is "one billion, one hundred sixty-five million, five hundred forty-two thousand, sixty-three".