1404135653 has 2 divisors, whose sum is σ = 1404135654. Its totient is φ = 1404135652.

The previous prime is 1404135647. The next prime is 1404135709. The reversal of 1404135653 is 3565314041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1068439969 + 335695684 = 32687^2 + 18322^2 .

It is a cyclic number.

It is not a de Polignac number, because 1404135653 - 2¹² = 1404131557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1404135613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702067826 + 702067827.

It is an arithmetic number, because the mean of its divisors is an integer number (702067827).

Almost surely, 2^1404135653 is an apocalyptic number.

It is an amenable number.

1404135653 is a deficient number, since it is larger than the sum of its proper divisors (1).

1404135653 is an equidigital number, since it uses as much as digits as its factorization.

1404135653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 1404135653 is about 37471.7981020394. The cubic root of 1404135653 is about 1119.7894090131.

Adding to 1404135653 its reverse (3565314041), we get a palindrome (4969449694).

It can be divided in two parts, 14041 and 35653, that added together give a palindrome (49694).

The spelling of 1404135653 in words is "one billion, four hundred four million, one hundred thirty-five thousand, six hundred fifty-three".