1163040655 has 16 divisors (see below), whose sum is σ = 1664377344. Its totient is φ = 762838560.

The previous prime is 1163040653. The next prime is 1163040677. The reversal of 1163040655 is 5560403611.

It is not a de Polignac number, because 1163040655 - 2¹ = 1163040653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163040653) 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, 721581 + ... + 723190.

It is an arithmetic number, because the mean of its divisors is an integer number (104023584).

Almost surely, 2^1163040655 is an apocalyptic number.

1163040655 is a deficient number, since it is larger than the sum of its proper divisors (501336689).

1163040655 is a wasteful number, since it uses less digits than its factorization.

1163040655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444806.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 1163040655 is about 34103.3818704245. The cubic root of 1163040655 is about 1051.6348394936.

The spelling of 1163040655 in words is "one billion, one hundred sixty-three million, forty thousand, six hundred fifty-five".