1968459222420 has 36 divisors (see below), whose sum is σ = 5970992975220. Its totient is φ = 524922459264.

The previous prime is 1968459222407. The next prime is 1968459222421. The reversal of 1968459222420 is 242229548691.

1968459222420 is a `hidden beast` number, since 1 + 9 + 6 + 8 + 4 + 592 + 2 + 2 + 42 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1358991714564 + 609467507856 = 1165758^2 + 780684^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968459222421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5467942105 + ... + 5467942464.

Almost surely, 2^{1968459222420} is an apocalyptic number.

1968459222420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1968459222420 is an abundant number, since it is smaller than the sum of its proper divisors (4002533752800).

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

1968459222420 is a wasteful number, since it uses less digits than its factorization.

1968459222420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10935884584 (or 10935884579 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 1968459222420 in words is "one trillion, nine hundred sixty-eight billion, four hundred fifty-nine million, two hundred twenty-two thousand, four hundred twenty".