2161433228 has 6 divisors (see below), whose sum is σ = 3782508156. Its totient is φ = 1080716612.

The previous prime is 2161433213. The next prime is 2161433231. The reversal of 2161433228 is 8223341612.

It is a junction number, because it is equal to n+sod(n) for n = 2161433194 and 2161433203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270179150 + ... + 270179157.

It is an arithmetic number, because the mean of its divisors is an integer number (630418026).

Almost surely, 2^2161433228 is an apocalyptic number.

It is an amenable number.

2161433228 is a deficient number, since it is larger than the sum of its proper divisors (1621074928).

2161433228 is a wasteful number, since it uses less digits than its factorization.

2161433228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540358311 (or 540358309 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 2161433228 is about 46491.2166758410. The cubic root of 2161433228 is about 1292.9466578546.

The spelling of 2161433228 in words is "two billion, one hundred sixty-one million, four hundred thirty-three thousand, two hundred twenty-eight".