2166995374 has 16 divisors (see below), whose sum is σ = 3291482880. Its totient is φ = 1069849080.

The previous prime is 2166995323. The next prime is 2166995381. The reversal of 2166995374 is 4735996612.

It is a happy number.

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, 550987 + ... + 554905.

It is an arithmetic number, because the mean of its divisors is an integer number (205717680).

Almost surely, 2^2166995374 is an apocalyptic number.

2166995374 is a deficient number, since it is larger than the sum of its proper divisors (1124487506).

2166995374 is a wasteful number, since it uses less digits than its factorization.

2166995374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7335.

The product of its digits is 2449440, while the sum is 52.

The square root of 2166995374 is about 46550.9975618139. The cubic root of 2166995374 is about 1294.0547803062.

The spelling of 2166995374 in words is "two billion, one hundred sixty-six million, nine hundred ninety-five thousand, three hundred seventy-four".