1135511601 has 16 divisors (see below), whose sum is σ = 1731510144. Its totient is φ = 648411264.

The previous prime is 1135511599. The next prime is 1135511603. The reversal of 1135511601 is 1061155311.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1135511599) and next prime (1135511603).

It is not a de Polignac number, because 1135511601 - 2¹ = 1135511599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1135511603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13245 + ... + 49461.

It is an arithmetic number, because the mean of its divisors is an integer number (108219384).

Almost surely, 2^1135511601 is an apocalyptic number.

It is an amenable number.

1135511601 is a deficient number, since it is larger than the sum of its proper divisors (595998543).

1135511601 is a wasteful number, since it uses less digits than its factorization.

1135511601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37720.

The product of its (nonzero) digits is 450, while the sum is 24.

The square root of 1135511601 is about 33697.3530266103. The cubic root of 1135511601 is about 1043.2711356549.

Adding to 1135511601 its reverse (1061155311), we get a palindrome (2196666912).

The spelling of 1135511601 in words is "one billion, one hundred thirty-five million, five hundred eleven thousand, six hundred one".