2161366036 has 12 divisors (see below), whose sum is σ = 3783034080. Its totient is φ = 1080499160.

The previous prime is 2161366021. The next prime is 2161366037. The reversal of 2161366036 is 6306631612.

It is a junction number, because it is equal to n+sod(n) for n = 2161365992 and 2161366010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161366037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17566 + ... + 68053.

It is an arithmetic number, because the mean of its divisors is an integer number (315252840).

Almost surely, 2^2161366036 is an apocalyptic number.

It is an amenable number.

2161366036 is a deficient number, since it is larger than the sum of its proper divisors (1621668044).

2161366036 is a wasteful number, since it uses less digits than its factorization.

2161366036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91934 (or 91932 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 2161366036 is about 46490.4940391044. The cubic root of 2161366036 is about 1292.9332598662.

Adding to 2161366036 its reverse (6306631612), we get a palindrome (8467997648).

The spelling of 2161366036 in words is "two billion, one hundred sixty-one million, three hundred sixty-six thousand, thirty-six".