1968197562 has 16 divisors (see below), whose sum is σ = 4373772480. Its totient is φ = 656065836.

The previous prime is 1968197557. The next prime is 1968197597. The reversal of 1968197562 is 2657918691.

1968197562 is a `hidden beast` number, since 1 + 9 + 68 + 19 + 7 + 562 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 36448103 = 1968197562 / (1 + 9 + 6 + 8 + 1 + 9 + 7 + 5 + 6 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 1968197499 and 1968197508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18223998 + ... + 18224105.

It is an arithmetic number, because the mean of its divisors is an integer number (273360780).

Almost surely, 2^1968197562 is an apocalyptic number.

1968197562 is an abundant number, since it is smaller than the sum of its proper divisors (2405574918).

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

1968197562 is a wasteful number, since it uses less digits than its factorization.

1968197562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36448114 (or 36448108 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 54.

The square root of 1968197562 is about 44364.3726654621. The cubic root of 1968197562 is about 1253.2072437254.

The spelling of 1968197562 in words is "one billion, nine hundred sixty-eight million, one hundred ninety-seven thousand, five hundred sixty-two".