2109230155 has 4 divisors (see below), whose sum is σ = 2531076192. Its totient is φ = 1687384120.

The previous prime is 2109230093. The next prime is 2109230219. The reversal of 2109230155 is 5510329012.

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

It is not a de Polignac number, because 2109230155 - 2⁷ = 2109230027 is a prime.

It is a super-2 number, since 2×2109230155² = 8897703693522648050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210923011 + ... + 210923020.

It is an arithmetic number, because the mean of its divisors is an integer number (632769048).

Almost surely, 2^2109230155 is an apocalyptic number.

2109230155 is a deficient number, since it is larger than the sum of its proper divisors (421846037).

2109230155 is an equidigital number, since it uses as much as digits as its factorization.

2109230155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421846036.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 2109230155 is about 45926.3557774836. The cubic root of 2109230155 is about 1282.4526044952.

Adding to 2109230155 its reverse (5510329012), we get a palindrome (7619559167).

The spelling of 2109230155 in words is "two billion, one hundred nine million, two hundred thirty thousand, one hundred fifty-five".