1401303653 has 2 divisors, whose sum is σ = 1401303654. Its totient is φ = 1401303652.

The previous prime is 1401303581. The next prime is 1401303661. The reversal of 1401303653 is 3563031041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1141223524 + 260080129 = 33782^2 + 16127^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401303653 - 2¹⁴ = 1401287269 is a prime.

It is a super-2 number, since 2×1401303653² = 3927303855822288818, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401300653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700651826 + 700651827.

It is an arithmetic number, because the mean of its divisors is an integer number (700651827).

Almost surely, 2^1401303653 is an apocalyptic number.

It is an amenable number.

1401303653 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401303653 is an equidigital number, since it uses as much as digits as its factorization.

1401303653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 1401303653 is about 37433.9906101393. The cubic root of 1401303653 is about 1119.0360682140.

Adding to 1401303653 its reverse (3563031041), we get a palindrome (4964334694).

The spelling of 1401303653 in words is "one billion, four hundred one million, three hundred three thousand, six hundred fifty-three".