1023816245 has 8 divisors (see below), whose sum is σ = 1300848984. Its totient is φ = 770873344.

The previous prime is 1023816239. The next prime is 1023816247. The reversal of 1023816245 is 5426183201.

It can be written as a sum of positive squares in 4 ways, for example, as 29170801 + 994645444 = 5401^2 + 31538^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1023816245 - 2⁴ = 1023816229 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 (1023816247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6022364 + ... + 6022533.

It is an arithmetic number, because the mean of its divisors is an integer number (162606123).

Almost surely, 2^1023816245 is an apocalyptic number.

It is an amenable number.

1023816245 is a deficient number, since it is larger than the sum of its proper divisors (277032739).

1023816245 is a wasteful number, since it uses less digits than its factorization.

1023816245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12044919.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 1023816245 is about 31997.1286993068. The cubic root of 1023816245 is about 1007.8765454778.

Adding to 1023816245 its reverse (5426183201), we get a palindrome (6449999446).

The spelling of 1023816245 in words is "one billion, twenty-three million, eight hundred sixteen thousand, two hundred forty-five".