1023816816 has 180 divisors, whose sum is σ = 3200074696. Its totient is φ = 305268480.

The previous prime is 1023816797. The next prime is 1023816817. The reversal of 1023816816 is 6186183201.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023816817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1166970 + ... + 1167846.

Almost surely, 2^1023816816 is an apocalyptic number.

1023816816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1023816816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1600037348).

1023816816 is an abundant number, since it is smaller than the sum of its proper divisors (2176257880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1023816816 is a wasteful number, since it uses less digits than its factorization.

1023816816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980 (or 960 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1023816816 is about 31997.1376219811. The cubic root of 1023816816 is about 1007.8767328478.

The spelling of 1023816816 in words is "one billion, twenty-three million, eight hundred sixteen thousand, eight hundred sixteen".