1968625994 has 8 divisors (see below), whose sum is σ = 2953387008. Its totient is φ = 984163660.

The previous prime is 1968625987. The next prime is 1968626041. The reversal of 1968625994 is 4995268691.

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

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 3 ways as a sum of consecutive naturals, for example, 57392 + ... + 85035.

It is an arithmetic number, because the mean of its divisors is an integer number (369173376).

Almost surely, 2^1968625994 is an apocalyptic number.

1968625994 is a deficient number, since it is larger than the sum of its proper divisors (984761014).

1968625994 is a wasteful number, since it uses less digits than its factorization.

1968625994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149340.

The product of its digits is 8398080, while the sum is 59.

The square root of 1968625994 is about 44369.2009619285. The cubic root of 1968625994 is about 1253.2981687326.

The spelling of 1968625994 in words is "one billion, nine hundred sixty-eight million, six hundred twenty-five thousand, nine hundred ninety-four".