1968625893 has 16 divisors (see below), whose sum is σ = 2843680896. Its totient is φ = 1204203840.

The previous prime is 1968625889. The next prime is 1968625903. The reversal of 1968625893 is 3985268691.

It is not a de Polignac number, because 1968625893 - 2² = 1968625889 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968625843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144618 + ... + 157643.

It is an arithmetic number, because the mean of its divisors is an integer number (177730056).

Almost surely, 2^1968625893 is an apocalyptic number.

1968625893 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1968625893 is a deficient number, since it is larger than the sum of its proper divisors (875055003).

1968625893 is a wasteful number, since it uses less digits than its factorization.

1968625893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302444.

The product of its digits is 5598720, while the sum is 57.

The square root of 1968625893 is about 44369.1998237516. The cubic root of 1968625893 is about 1253.2981472992.

The spelling of 1968625893 in words is "one billion, nine hundred sixty-eight million, six hundred twenty-five thousand, eight hundred ninety-three".