1023648786 has 64 divisors (see below), whose sum is σ = 2360160000. Its totient is φ = 328478976.

The previous prime is 1023648739. The next prime is 1023648797. The reversal of 1023648786 is 6878463201.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 686730 + ... + 688218.

It is an arithmetic number, because the mean of its divisors is an integer number (36877500).

Almost surely, 2^1023648786 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1023648786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1180080000).

1023648786 is an abundant number, since it is smaller than the sum of its proper divisors (1336511214).

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

1023648786 is a wasteful number, since it uses less digits than its factorization.

1023648786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968 (or 1962 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 1023648786 is about 31994.5118106215. The cubic root of 1023648786 is about 1007.8215918661.

The spelling of 1023648786 in words is "one billion, twenty-three million, six hundred forty-eight thousand, seven hundred eighty-six".