1968013212 has 144 divisors (see below), whose sum is σ = 5189617440. Its totient is φ = 579870720.

The previous prime is 1968013199. The next prime is 1968013219. The reversal of 1968013212 is 2123108691.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968013219) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12535038 + ... + 12535194.

It is an arithmetic number, because the mean of its divisors is an integer number (36039010).

Almost surely, 2^1968013212 is an apocalyptic number.

1968013212 is a gapful number since it is divisible by the number (12) 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 1968013212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2594808720).

1968013212 is an abundant number, since it is smaller than the sum of its proper divisors (3221604228).

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

1968013212 is a wasteful number, since it uses less digits than its factorization.

1968013212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1968013212 is about 44362.2949361279. The cubic root of 1968013212 is about 1253.1681155448.

The spelling of 1968013212 in words is "one billion, nine hundred sixty-eight million, thirteen thousand, two hundred twelve".