1968830857 has 8 divisors (see below), whose sum is σ = 2252221632. Its totient is φ = 1685972400.

The previous prime is 1968830837. The next prime is 1968830861. The reversal of 1968830857 is 7580388691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1968830857 - 2⁷ = 1968830729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1968830798 and 1968830807.

It is not an unprimeable number, because it can be changed into a prime (1968830807) 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, 125119 + ... + 139972.

It is an arithmetic number, because the mean of its divisors is an integer number (281527704).

Almost surely, 2^1968830857 is an apocalyptic number.

It is an amenable number.

1968830857 is a deficient number, since it is larger than the sum of its proper divisors (283390775).

1968830857 is a wasteful number, since it uses less digits than its factorization.

1968830857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266159.

The product of its (nonzero) digits is 2903040, while the sum is 55.

The square root of 1968830857 is about 44371.5095190596. The cubic root of 1968830857 is about 1253.3416416113.

The spelling of 1968830857 in words is "one billion, nine hundred sixty-eight million, eight hundred thirty thousand, eight hundred fifty-seven".