2156822835 has 16 divisors (see below), whose sum is σ = 3535086240. Its totient is φ = 1122248960.

The previous prime is 2156822831. The next prime is 2156822849. The reversal of 2156822835 is 5382286512.

It is a happy number.

It is not a de Polignac number, because 2156822835 - 2² = 2156822831 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2156822831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1752900 + ... + 1754129.

It is an arithmetic number, because the mean of its divisors is an integer number (220942890).

Almost surely, 2^2156822835 is an apocalyptic number.

2156822835 is a deficient number, since it is larger than the sum of its proper divisors (1378263405).

2156822835 is a wasteful number, since it uses less digits than its factorization.

2156822835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3507078.

The product of its digits is 230400, while the sum is 42.

The square root of 2156822835 is about 46441.6067228514. The cubic root of 2156822835 is about 1292.0267072265.

The spelling of 2156822835 in words is "two billion, one hundred fifty-six million, eight hundred twenty-two thousand, eight hundred thirty-five".