1101143855 has 8 divisors (see below), whose sum is σ = 1510140192. Its totient is φ = 755070048.

The previous prime is 1101143831. The next prime is 1101143863. The reversal of 1101143855 is 5583411011.

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

It is a cyclic number.

It is not a de Polignac number, because 1101143855 - 2²² = 1096949551 is a prime.

It is a super-2 number, since 2×1101143855² = 2425035578808522050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15730592 + ... + 15730661.

It is an arithmetic number, because the mean of its divisors is an integer number (188767524).

Almost surely, 2^1101143855 is an apocalyptic number.

1101143855 is a deficient number, since it is larger than the sum of its proper divisors (408996337).

1101143855 is an equidigital number, since it uses as much as digits as its factorization.

1101143855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31461265.

The product of its (nonzero) digits is 2400, while the sum is 29.

The square root of 1101143855 is about 33183.4876858958. The cubic root of 1101143855 is about 1032.6378032512.

Adding to 1101143855 its reverse (5583411011), we get a palindrome (6684554866).

The spelling of 1101143855 in words is "one billion, one hundred one million, one hundred forty-three thousand, eight hundred fifty-five".