1485897421 has 2 divisors, whose sum is σ = 1485897422. Its totient is φ = 1485897420.

The previous prime is 1485897419. The next prime is 1485897449. The reversal of 1485897421 is 1247985841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1089330025 + 396567396 = 33005^2 + 19914^2 .

It is an emirp because it is prime and its reverse (1247985841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1485897421 - 2¹ = 1485897419 is a prime.

It is a super-2 number, since 2×1485897421² = 4415782291468902482, which contains 22 as substring.

Together with 1485897419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1485897401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 742948710 + 742948711.

It is an arithmetic number, because the mean of its divisors is an integer number (742948711).

Almost surely, 2^1485897421 is an apocalyptic number.

It is an amenable number.

1485897421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1485897421 is an equidigital number, since it uses as much as digits as its factorization.

1485897421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 645120, while the sum is 49.

The square root of 1485897421 is about 38547.3399990194. The cubic root of 1485897421 is about 1141.1155134568.

The spelling of 1485897421 in words is "one billion, four hundred eighty-five million, eight hundred ninety-seven thousand, four hundred twenty-one".