1966694036 has 24 divisors (see below), whose sum is σ = 3521133504. Its totient is φ = 960901760.

The previous prime is 1966693987. The next prime is 1966694057. The reversal of 1966694036 is 6304966691.

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, 1451 + ... + 62733.

It is an arithmetic number, because the mean of its divisors is an integer number (146713896).

Almost surely, 2^1966694036 is an apocalyptic number.

It is an amenable number.

1966694036 is a deficient number, since it is larger than the sum of its proper divisors (1554439468).

1966694036 is a wasteful number, since it uses less digits than its factorization.

1966694036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61471 (or 61469 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 50.

The square root of 1966694036 is about 44347.4242318536. The cubic root of 1966694036 is about 1252.8880498754. Note that the first 3 decimals are identical.

The spelling of 1966694036 in words is "one billion, nine hundred sixty-six million, six hundred ninety-four thousand, thirty-six".