2180120162 has 12 divisors (see below), whose sum is σ = 3594496038. Its totient is φ = 990963600.

The previous prime is 2180120161. The next prime is 2180120197. The reversal of 2180120162 is 2610210812.

It can be written as a sum of positive squares in only one way, i.e., 1925366641 + 254753521 = 43879^2 + 15961^2 .

It is not an unprimeable number, because it can be changed into a prime (2180120161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4504139 + ... + 4504622.

Almost surely, 2^2180120162 is an apocalyptic number.

2180120162 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2180120162 is a deficient number, since it is larger than the sum of its proper divisors (1414375876).

2180120162 is a wasteful number, since it uses less digits than its factorization.

2180120162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9008785 (or 9008774 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 2180120162 is about 46691.7568956235. The cubic root of 2180120162 is about 1296.6620801827.

Adding to 2180120162 its reverse (2610210812), we get a palindrome (4790330974).

The spelling of 2180120162 in words is "two billion, one hundred eighty million, one hundred twenty thousand, one hundred sixty-two".