1516213423 has 2 divisors, whose sum is σ = 1516213424. Its totient is φ = 1516213422.

The previous prime is 1516213381. The next prime is 1516213463. The reversal of 1516213423 is 3243126151.

It is a strong prime.

It is an emirp because it is prime and its reverse (3243126151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1516213423 - 2⁹ = 1516212911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1516213391 and 1516213400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1516213463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 758106711 + 758106712.

It is an arithmetic number, because the mean of its divisors is an integer number (758106712).

Almost surely, 2^1516213423 is an apocalyptic number.

1516213423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1516213423 is an equidigital number, since it uses as much as digits as its factorization.

1516213423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 28.

The square root of 1516213423 is about 38938.5852721950. The cubic root of 1516213423 is about 1148.8238568868.

Adding to 1516213423 its reverse (3243126151), we get a palindrome (4759339574).

The spelling of 1516213423 in words is "one billion, five hundred sixteen million, two hundred thirteen thousand, four hundred twenty-three".