1966971922 has 16 divisors (see below), whose sum is σ = 3212841600. Its totient is φ = 899594640.

The previous prime is 1966971907. The next prime is 1966971947. The reversal of 1966971922 is 2291796691.

It is a self number, because there is not a number n which added to its sum of digits gives 1966971922.

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, 891354 + ... + 893557.

It is an arithmetic number, because the mean of its divisors is an integer number (200802600).

Almost surely, 2^1966971922 is an apocalyptic number.

1966971922 is a deficient number, since it is larger than the sum of its proper divisors (1245869678).

1966971922 is a wasteful number, since it uses less digits than its factorization.

1966971922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784961.

The product of its digits is 734832, while the sum is 52.

The square root of 1966971922 is about 44350.5571780107. The cubic root of 1966971922 is about 1252.9470564529.

The spelling of 1966971922 in words is "one billion, nine hundred sixty-six million, nine hundred seventy-one thousand, nine hundred twenty-two".