2164156 has 12 divisors (see below), whose sum is σ = 3797640. Its totient is φ = 1079120.

The previous prime is 2164121. The next prime is 2164171. The reversal of 2164156 is 6514612.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2164156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2226 + ... + 3046.

It is an arithmetic number, because the mean of its divisors is an integer number (316470).

2^2164156 is an apocalyptic number.

It is an amenable number.

2164156 is a deficient number, since it is larger than the sum of its proper divisors (1633484).

2164156 is a wasteful number, since it uses less digits than its factorization.

2164156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484 (or 1482 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 2164156 is about 1471.1070661240. The cubic root of 2164156 is about 129.3489341250.

Adding to 2164156 its reverse (6514612), we get a palindrome (8678768).

The spelling of 2164156 in words is "two million, one hundred sixty-four thousand, one hundred fifty-six".