2146981766 has 16 divisors (see below), whose sum is σ = 3334197600. Its totient is φ = 1035642048.

The previous prime is 2146981729. The next prime is 2146981777. The reversal of 2146981766 is 6671896412.

It is a congruent number.

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, 61370 + ... + 89778.

It is an arithmetic number, because the mean of its divisors is an integer number (208387350).

Almost surely, 2^2146981766 is an apocalyptic number.

2146981766 is a deficient number, since it is larger than the sum of its proper divisors (1187215834).

2146981766 is a wasteful number, since it uses less digits than its factorization.

2146981766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29743.

The product of its digits is 870912, while the sum is 50.

The square root of 2146981766 is about 46335.5345927939. The cubic root of 2146981766 is about 1290.0586408453.

The spelling of 2146981766 in words is "two billion, one hundred forty-six million, nine hundred eighty-one thousand, seven hundred sixty-six".