1163373555 has 16 divisors (see below), whose sum is σ = 1862371584. Its totient is φ = 620141280.

The previous prime is 1163373521. The next prime is 1163373559. The reversal of 1163373555 is 5553733611.

It is not a de Polignac number, because 1163373555 - 2¹⁶ = 1163308019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1163373559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10882 + ... + 49448.

It is an arithmetic number, because the mean of its divisors is an integer number (116398224).

Almost surely, 2^1163373555 is an apocalyptic number.

1163373555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1163373555 is a deficient number, since it is larger than the sum of its proper divisors (698998029).

1163373555 is a wasteful number, since it uses less digits than its factorization.

1163373555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40586.

The product of its digits is 141750, while the sum is 39.

The square root of 1163373555 is about 34108.2622688404. The cubic root of 1163373555 is about 1051.7351672679.

The spelling of 1163373555 in words is "one billion, one hundred sixty-three million, three hundred seventy-three thousand, five hundred fifty-five".