1161536455 has 32 divisors (see below), whose sum is σ = 1484780544. Its totient is φ = 870456576.

The previous prime is 1161536381. The next prime is 1161536471. The reversal of 1161536455 is 5546351611.

It is a cyclic number.

It is not a de Polignac number, because 1161536455 - 2²⁹ = 624665543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1794942 + ... + 1795588.

It is an arithmetic number, because the mean of its divisors is an integer number (46399392).

Almost surely, 2^1161536455 is an apocalyptic number.

1161536455 is a deficient number, since it is larger than the sum of its proper divisors (323244089).

1161536455 is a wasteful number, since it uses less digits than its factorization.

1161536455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975.

The product of its digits is 54000, while the sum is 37.

The square root of 1161536455 is about 34081.3212038501. The cubic root of 1161536455 is about 1051.1812722083.

The spelling of 1161536455 in words is "one billion, one hundred sixty-one million, five hundred thirty-six thousand, four hundred fifty-five".