1968629208 has 128 divisors (see below), whose sum is σ = 6252933120. Its totient is φ = 502433280.

The previous prime is 1968629207. The next prime is 1968629209. The reversal of 1968629208 is 8029268691.

It is an interprime number because it is at equal distance from previous prime (1968629207) and next prime (1968629209).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968629207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53166 + ... + 82242.

It is an arithmetic number, because the mean of its divisors is an integer number (48851040).

Almost surely, 2^1968629208 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 1968629208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3126466560).

1968629208 is an abundant number, since it is smaller than the sum of its proper divisors (4284303912).

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

1968629208 is a wasteful number, since it uses less digits than its factorization.

1968629208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29137 (or 29133 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 1968629208 is about 44369.2371807314. The cubic root of 1968629208 is about 1253.2988507816.

The spelling of 1968629208 in words is "one billion, nine hundred sixty-eight million, six hundred twenty-nine thousand, two hundred eight".