2156444335 has 4 divisors (see below), whose sum is σ = 2587733208. Its totient is φ = 1725155464.

The previous prime is 2156444333. The next prime is 2156444357. The reversal of 2156444335 is 5334446512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2156444335 - 2¹ = 2156444333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2156444294 and 2156444303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156444333) 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, 215644429 + ... + 215644438.

It is an arithmetic number, because the mean of its divisors is an integer number (646933302).

Almost surely, 2^2156444335 is an apocalyptic number.

2156444335 is a deficient number, since it is larger than the sum of its proper divisors (431288873).

2156444335 is an equidigital number, since it uses as much as digits as its factorization.

2156444335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431288872.

The product of its digits is 172800, while the sum is 37.

The square root of 2156444335 is about 46437.5315343096. The cubic root of 2156444335 is about 1291.9511237170.

The spelling of 2156444335 in words is "two billion, one hundred fifty-six million, four hundred forty-four thousand, three hundred thirty-five".