2156442230 has 32 divisors (see below), whose sum is σ = 3905521920. Its totient is φ = 857278080.

The previous prime is 2156442227. The next prime is 2156442263. The reversal of 2156442230 is 322446512.

It is a junction number, because it is equal to n+sod(n) for n = 2156442193 and 2156442202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1497851 + ... + 1499289.

It is an arithmetic number, because the mean of its divisors is an integer number (122047560).

Almost surely, 2^2156442230 is an apocalyptic number.

2156442230 is a deficient number, since it is larger than the sum of its proper divisors (1749079690).

2156442230 is a wasteful number, since it uses less digits than its factorization.

2156442230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2264.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 2156442230 is about 46437.5088694473. The cubic root of 2156442230 is about 1291.9507033401.

Adding to 2156442230 its reverse (322446512), we get a palindrome (2478888742).

The spelling of 2156442230 in words is "two billion, one hundred fifty-six million, four hundred forty-two thousand, two hundred thirty".