1968194493 has 12 divisors (see below), whose sum is σ = 2843332128. Its totient is φ = 1311952200.

The previous prime is 1968194489. The next prime is 1968194497. The reversal of 1968194493 is 3944918691.

It is a happy number.

1968194493 is a `hidden beast` number, since 1 + 9 + 68 + 1 + 94 + 493 = 666.

It is an interprime number because it is at equal distance from previous prime (1968194489) and next prime (1968194497).

It is not a de Polignac number, because 1968194493 - 2² = 1968194489 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968194497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124168 + ... + 139118.

It is an arithmetic number, because the mean of its divisors is an integer number (236944344).

Almost surely, 2^1968194493 is an apocalyptic number.

It is an amenable number.

1968194493 is a deficient number, since it is larger than the sum of its proper divisors (875137635).

1968194493 is a wasteful number, since it uses less digits than its factorization.

1968194493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29584 (or 29581 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 1968194493 is about 44364.3380768833. The cubic root of 1968194493 is about 1253.2065923519.

The spelling of 1968194493 in words is "one billion, nine hundred sixty-eight million, one hundred ninety-four thousand, four hundred ninety-three".