1023808609 has 2 divisors, whose sum is σ = 1023808610. Its totient is φ = 1023808608.

The previous prime is 1023808603. The next prime is 1023808613. The reversal of 1023808609 is 9068083201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 886848400 + 136960209 = 29780^2 + 11703^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023808609 - 2⁷ = 1023808481 is a prime.

It is not a weakly prime, because it can be changed into another prime (1023808603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511904304 + 511904305.

It is an arithmetic number, because the mean of its divisors is an integer number (511904305).

Almost surely, 2^1023808609 is an apocalyptic number.

It is an amenable number.

1023808609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023808609 is an equidigital number, since it uses as much as digits as its factorization.

1023808609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 1023808609 is about 31997.0093758776. The cubic root of 1023808609 is about 1007.8740397663.

The spelling of 1023808609 in words is "one billion, twenty-three million, eight hundred eight thousand, six hundred nine".