1416521443 has 12 divisors (see below), whose sum is σ = 1489896720. Its totient is φ = 1345152480.

The previous prime is 1416521441. The next prime is 1416521461. The reversal of 1416521443 is 3441256141.

1416521443 = 3992² + 3993² + ... + 4078².

It is not a de Polignac number, because 1416521443 - 2¹ = 1416521441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1416521441) 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 in 11 ways as a sum of consecutive naturals, for example, 101346 + ... + 114472.

It is an arithmetic number, because the mean of its divisors is an integer number (124158060).

Almost surely, 2^1416521443 is an apocalyptic number.

1416521443 is a deficient number, since it is larger than the sum of its proper divisors (73375277).

1416521443 is an equidigital number, since it uses as much as digits as its factorization.

1416521443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13278 (or 13217 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 1416521443 is about 37636.7034023970. The cubic root of 1416521443 is about 1123.0723051558.

Adding to 1416521443 its reverse (3441256141), we get a palindrome (4857777584).

The spelling of 1416521443 in words is "one billion, four hundred sixteen million, five hundred twenty-one thousand, four hundred forty-three".