1023515459 has 2 divisors, whose sum is σ = 1023515460. Its totient is φ = 1023515458.

The previous prime is 1023515417. The next prime is 1023515461. The reversal of 1023515459 is 9545153201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1023515459 - 2²⁸ = 755080003 is a prime.

Together with 1023515461, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1023515359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511757729 + 511757730.

It is an arithmetic number, because the mean of its divisors is an integer number (511757730).

Almost surely, 2^1023515459 is an apocalyptic number.

1023515459 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023515459 is an equidigital number, since it uses as much as digits as its factorization.

1023515459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 1023515459 is about 31992.4281510485. The cubic root of 1023515459 is about 1007.7778347802. Note that the first 3 decimals are identical.

The spelling of 1023515459 in words is "one billion, twenty-three million, five hundred fifteen thousand, four hundred fifty-nine".