1023455159 has 4 divisors (see below), whose sum is σ = 1077321240. Its totient is φ = 969589080.

The previous prime is 1023455149. The next prime is 1023455189. The reversal of 1023455159 is 9515543201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9515543201 = 8377 ⋅1135913.

It is a cyclic number.

It is not a de Polignac number, because 1023455159 - 2⁴ = 1023455143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023455149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26933012 + ... + 26933049.

It is an arithmetic number, because the mean of its divisors is an integer number (269330310).

Almost surely, 2^1023455159 is an apocalyptic number.

1023455159 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1023455159 is a deficient number, since it is larger than the sum of its proper divisors (53866081).

1023455159 is an equidigital number, since it uses as much as digits as its factorization.

1023455159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53866080.

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

The square root of 1023455159 is about 31991.4857266742. The cubic root of 1023455159 is about 1007.7580434501.

The spelling of 1023455159 in words is "one billion, twenty-three million, four hundred fifty-five thousand, one hundred fifty-nine".