1523434513 has 2 divisors, whose sum is σ = 1523434514. Its totient is φ = 1523434512.

The previous prime is 1523434511. The next prime is 1523434529. The reversal of 1523434513 is 3154343251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1328748304 + 194686209 = 36452^2 + 13953^2 .

It is a cyclic number.

It is not a de Polignac number, because 1523434513 - 2¹ = 1523434511 is a prime.

Together with 1523434511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1523434511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 761717256 + 761717257.

It is an arithmetic number, because the mean of its divisors is an integer number (761717257).

Almost surely, 2^1523434513 is an apocalyptic number.

It is an amenable number.

1523434513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1523434513 is an equidigital number, since it uses as much as digits as its factorization.

1523434513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 31.

The square root of 1523434513 is about 39031.1992257476. The cubic root of 1523434513 is about 1150.6447582914.

Adding to 1523434513 its reverse (3154343251), we get a palindrome (4677777764).

The spelling of 1523434513 in words is "one billion, five hundred twenty-three million, four hundred thirty-four thousand, five hundred thirteen".