1421865733 has 2 divisors, whose sum is σ = 1421865734. Its totient is φ = 1421865732.

The previous prime is 1421865719. The next prime is 1421865751. The reversal of 1421865733 is 3375681241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 884646049 + 537219684 = 29743^2 + 23178^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421865733 - 2¹⁷ = 1421734661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421865713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710932866 + 710932867.

It is an arithmetic number, because the mean of its divisors is an integer number (710932867).

Almost surely, 2^1421865733 is an apocalyptic number.

It is an amenable number.

1421865733 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421865733 is an equidigital number, since it uses as much as digits as its factorization.

1421865733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 40.

The square root of 1421865733 is about 37707.6349430722. The cubic root of 1421865733 is about 1124.4829183876.

The spelling of 1421865733 in words is "one billion, four hundred twenty-one million, eight hundred sixty-five thousand, seven hundred thirty-three".