1440001153 has 2 divisors, whose sum is σ = 1440001154. Its totient is φ = 1440001152.

The previous prime is 1440001117. The next prime is 1440001159. The reversal of 1440001153 is 3511000441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 742671504 + 697329649 = 27252^2 + 26407^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1440001153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1440001153.

It is not a weakly prime, because it can be changed into another prime (1440001159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720000576 + 720000577.

It is an arithmetic number, because the mean of its divisors is an integer number (720000577).

Almost surely, 2^1440001153 is an apocalyptic number.

It is an amenable number.

1440001153 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440001153 is an equidigital number, since it uses as much as digits as its factorization.

1440001153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1440001153 is about 37947.3471141264. The cubic root of 1440001153 is about 1129.2435360501.

Adding to 1440001153 its reverse (3511000441), we get a palindrome (4951001594).

The spelling of 1440001153 in words is "one billion, four hundred forty million, one thousand, one hundred fifty-three".