1968694180 has 24 divisors (see below), whose sum is σ = 4377450168. Its totient is φ = 741155328.

The previous prime is 1968694099. The next prime is 1968694193. The reversal of 1968694180 is 814968691.

It can be written as a sum of positive squares in 4 ways, for example, as 147282496 + 1821411684 = 12136^2 + 42678^2 .

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2894799 + ... + 2895478.

It is an arithmetic number, because the mean of its divisors is an integer number (182393757).

Almost surely, 2^1968694180 is an apocalyptic number.

1968694180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1968694180 is an abundant number, since it is smaller than the sum of its proper divisors (2408755988).

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

1968694180 is a wasteful number, since it uses less digits than its factorization.

1968694180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5790303 (or 5790301 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 52.

The square root of 1968694180 is about 44369.9693486484. The cubic root of 1968694180 is about 1253.3126384529.

The spelling of 1968694180 in words is "one billion, nine hundred sixty-eight million, six hundred ninety-four thousand, one hundred eighty".