2161233044 has 12 divisors (see below), whose sum is σ = 3799119744. Its totient is φ = 1075770264.

The previous prime is 2161233043. The next prime is 2161233049. The reversal of 2161233044 is 4403321612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161233043) 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, 1210562 + ... + 1212345.

It is an arithmetic number, because the mean of its divisors is an integer number (316593312).

Almost surely, 2^2161233044 is an apocalyptic number.

It is an amenable number.

2161233044 is a deficient number, since it is larger than the sum of its proper divisors (1637886700).

2161233044 is a wasteful number, since it uses less digits than its factorization.

2161233044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2423134 (or 2423132 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 2161233044 is about 46489.0637031980. The cubic root of 2161233044 is about 1292.9067406335.

Adding to 2161233044 its reverse (4403321612), we get a palindrome (6564554656).

The spelling of 2161233044 in words is "two billion, one hundred sixty-one million, two hundred thirty-three thousand, forty-four".