2166373732 has 6 divisors (see below), whose sum is σ = 3791154038. Its totient is φ = 1083186864.

The previous prime is 2166373697. The next prime is 2166373753. The reversal of 2166373732 is 2373736612.

It can be written as a sum of positive squares in only one way, i.e., 1833894976 + 332478756 = 42824^2 + 18234^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270796713 + ... + 270796720.

Almost surely, 2^2166373732 is an apocalyptic number.

It is an amenable number.

2166373732 is a deficient number, since it is larger than the sum of its proper divisors (1624780306).

2166373732 is a wasteful number, since it uses less digits than its factorization.

2166373732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541593437 (or 541593435 counting only the distinct ones).

The product of its digits is 190512, while the sum is 40.

The square root of 2166373732 is about 46544.3200831208. The cubic root of 2166373732 is about 1293.9310274291.

The spelling of 2166373732 in words is "two billion, one hundred sixty-six million, three hundred seventy-three thousand, seven hundred thirty-two".