1144811801 has 8 divisors (see below), whose sum is σ = 1353472320. Its totient is φ = 947430288.

The previous prime is 1144811761. The next prime is 1144811809. The reversal of 1144811801 is 1081184411.

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

It is a de Polignac number, because none of the positive numbers 2^k-1144811801 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144811809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2819531 + ... + 2819936.

It is an arithmetic number, because the mean of its divisors is an integer number (169184040).

Almost surely, 2^1144811801 is an apocalyptic number.

It is an amenable number.

1144811801 is a deficient number, since it is larger than the sum of its proper divisors (208660519).

1144811801 is an equidigital number, since it uses as much as digits as its factorization.

1144811801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5639503.

The product of its (nonzero) digits is 1024, while the sum is 29.

The square root of 1144811801 is about 33835.0676222170. The cubic root of 1144811801 is about 1046.1116352963. Note that the first 3 decimals are identical.

The spelling of 1144811801 in words is "one billion, one hundred forty-four million, eight hundred eleven thousand, eight hundred one".