2161977322 has 16 divisors (see below), whose sum is σ = 3418857792. Its totient is φ = 1023327360.

The previous prime is 2161977287. The next prime is 2161977341. The reversal of 2161977322 is 2237791612.

2161977322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 237804 + ... + 246727.

It is an arithmetic number, because the mean of its divisors is an integer number (213678612).

Almost surely, 2^2161977322 is an apocalyptic number.

2161977322 is a deficient number, since it is larger than the sum of its proper divisors (1256880470).

2161977322 is a wasteful number, since it uses less digits than its factorization.

2161977322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484653.

The product of its digits is 63504, while the sum is 40.

The square root of 2161977322 is about 46497.0678860506. The cubic root of 2161977322 is about 1293.0551391915.

The spelling of 2161977322 in words is "two billion, one hundred sixty-one million, nine hundred seventy-seven thousand, three hundred twenty-two".