1421339653 has 2 divisors, whose sum is σ = 1421339654. Its totient is φ = 1421339652.

The previous prime is 1421339641. The next prime is 1421339657. The reversal of 1421339653 is 3569331241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 866595844 + 554743809 = 29438^2 + 23553^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421339653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421339657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710669826 + 710669827.

It is an arithmetic number, because the mean of its divisors is an integer number (710669827).

Almost surely, 2^1421339653 is an apocalyptic number.

It is an amenable number.

1421339653 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421339653 is an equidigital number, since it uses as much as digits as its factorization.

1421339653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 37.

The square root of 1421339653 is about 37700.6585221001. The cubic root of 1421339653 is about 1124.3442177744.

The spelling of 1421339653 in words is "one billion, four hundred twenty-one million, three hundred thirty-nine thousand, six hundred fifty-three".