1966027686 has 48 divisors (see below), whose sum is σ = 4660362864. Its totient is φ = 551119296.

The previous prime is 1966027681. The next prime is 1966027703. The reversal of 1966027686 is 6867206691.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966027681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47505 + ... + 78668.

It is an arithmetic number, because the mean of its divisors is an integer number (97090893).

Almost surely, 2^1966027686 is an apocalyptic number.

1966027686 is an abundant number, since it is smaller than the sum of its proper divisors (2694335178).

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

1966027686 is a wasteful number, since it uses less digits than its factorization.

1966027686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126245 (or 126238 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 51.

The square root of 1966027686 is about 44339.9107576910. The cubic root of 1966027686 is about 1252.7465338349.

The spelling of 1966027686 in words is "one billion, nine hundred sixty-six million, twenty-seven thousand, six hundred eighty-six".