1421519573 has 2 divisors, whose sum is σ = 1421519574. Its totient is φ = 1421519572.

The previous prime is 1421519563. The next prime is 1421519621. The reversal of 1421519573 is 3759151241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1421516209 + 3364 = 37703^2 + 58^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421519573 - 2¹⁸ = 1421257429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421519543) 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, 710759786 + 710759787.

It is an arithmetic number, because the mean of its divisors is an integer number (710759787).

Almost surely, 2^1421519573 is an apocalyptic number.

It is an amenable number.

1421519573 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421519573 is an equidigital number, since it uses as much as digits as its factorization.

1421519573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 38.

The square root of 1421519573 is about 37703.0446118082. The cubic root of 1421519573 is about 1124.3916574032.

The spelling of 1421519573 in words is "one billion, four hundred twenty-one million, five hundred nineteen thousand, five hundred seventy-three".