1210788864 has 88 divisors (see below), whose sum is σ = 3585852720. Its totient is φ = 403587072.

The previous prime is 1210788863. The next prime is 1210788871. The reversal of 1210788864 is 4688870121.

It is not an unprimeable number, because it can be changed into a prime (1210788863) 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, 5752 + ... + 49544.

Almost surely, 2^1210788864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1210788864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1792926360).

1210788864 is an abundant number, since it is smaller than the sum of its proper divisors (2375063856).

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

1210788864 is an equidigital number, since it uses as much as digits as its factorization.

1210788864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43822 (or 43798 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The square root of 1210788864 is about 34796.3915370545. The cubic root of 1210788864 is about 1065.8337609066.

The spelling of 1210788864 in words is "one billion, two hundred ten million, seven hundred eighty-eight thousand, eight hundred sixty-four".