1163212755 has 8 divisors (see below), whose sum is σ = 1861140432. Its totient is φ = 620380128.

The previous prime is 1163212751. The next prime is 1163212781. The reversal of 1163212755 is 5572123611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1163212755 - 2² = 1163212751 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1163212751) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 38773744 + ... + 38773773.

It is an arithmetic number, because the mean of its divisors is an integer number (232642554).

Almost surely, 2^1163212755 is an apocalyptic number.

1163212755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1163212755 is a deficient number, since it is larger than the sum of its proper divisors (697927677).

1163212755 is an equidigital number, since it uses as much as digits as its factorization.

1163212755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77547525.

The product of its digits is 12600, while the sum is 33.

The square root of 1163212755 is about 34105.9049872599. The cubic root of 1163212755 is about 1051.6867085401.

The spelling of 1163212755 in words is "one billion, one hundred sixty-three million, two hundred twelve thousand, seven hundred fifty-five".