1023608591 has 2 divisors, whose sum is σ = 1023608592. Its totient is φ = 1023608590.

The previous prime is 1023608569. The next prime is 1023608611. The reversal of 1023608591 is 1958063201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1023608591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023608791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511804295 + 511804296.

It is an arithmetic number, because the mean of its divisors is an integer number (511804296).

Almost surely, 2^1023608591 is an apocalyptic number.

1023608591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023608591 is an equidigital number, since it uses as much as digits as its factorization.

1023608591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 1023608591 is about 31993.8836498478. The cubic root of 1023608591 is about 1007.8084005190.

The spelling of 1023608591 in words is "one billion, twenty-three million, six hundred eight thousand, five hundred ninety-one".