1155161406 has 32 divisors (see below), whose sum is σ = 2660537088. Its totient is φ = 327525120.

The previous prime is 1155161327. The next prime is 1155161443. The reversal of 1155161406 is 6041615511.

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 99475 + ... + 110478.

It is an arithmetic number, because the mean of its divisors is an integer number (83141784).

Almost surely, 2^1155161406 is an apocalyptic number.

1155161406 is an abundant number, since it is smaller than the sum of its proper divisors (1505375682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1155161406 is a wasteful number, since it uses less digits than its factorization.

1155161406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210096.

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 1155161406 is about 33987.6654979420. The cubic root of 1155161406 is about 1049.2546201972.

Adding to 1155161406 its reverse (6041615511), we get a palindrome (7196776917).

The spelling of 1155161406 in words is "one billion, one hundred fifty-five million, one hundred sixty-one thousand, four hundred six".