1419019821 has 6 divisors (see below), whose sum is σ = 2049695310. Its totient is φ = 946013208.

The previous prime is 1419019787. The next prime is 1419019829. The reversal of 1419019821 is 1289109141.

It can be written as a sum of positive squares in only one way, i.e., 852056100 + 566963721 = 29190^2 + 23811^2 .

It is not a de Polignac number, because 1419019821 - 2¹¹ = 1419017773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1419019829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78834426 + ... + 78834443.

It is an arithmetic number, because the mean of its divisors is an integer number (341615885).

Almost surely, 2^1419019821 is an apocalyptic number.

It is an amenable number.

1419019821 is a deficient number, since it is larger than the sum of its proper divisors (630675489).

1419019821 is a wasteful number, since it uses less digits than its factorization.

1419019821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157668875 (or 157668872 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The square root of 1419019821 is about 37669.8794927725. The cubic root of 1419019821 is about 1123.7321871892.

The spelling of 1419019821 in words is "one billion, four hundred nineteen million, nineteen thousand, eight hundred twenty-one".