1966438968 has 32 divisors (see below), whose sum is σ = 5294259600. Its totient is φ = 605058048.

The previous prime is 1966438949. The next prime is 1966438987. The reversal of 1966438968 is 8698346691.

It is an interprime number because it is at equal distance from previous prime (1966438949) and next prime (1966438987).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3151033 + ... + 3151656.

Almost surely, 2^1966438968 is an apocalyptic number.

It is an amenable number.

1966438968 is an abundant number, since it is smaller than the sum of its proper divisors (3327820632).

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

1966438968 is a wasteful number, since it uses less digits than its factorization.

1966438968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6302711 (or 6302707 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 60.

The square root of 1966438968 is about 44344.5483458790. The cubic root of 1966438968 is about 1252.8338836011.

The spelling of 1966438968 in words is "one billion, nine hundred sixty-six million, four hundred thirty-eight thousand, nine hundred sixty-eight".