2155349266 has 16 divisors (see below), whose sum is σ = 3702875904. Its totient is φ = 921723264.

The previous prime is 2155349221. The next prime is 2155349269. The reversal of 2155349266 is 6629435512.

It is not an unprimeable number, because it can be changed into a prime (2155349269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159775 + ... + 172738.

It is an arithmetic number, because the mean of its divisors is an integer number (231429744).

Almost surely, 2^2155349266 is an apocalyptic number.

2155349266 is a deficient number, since it is larger than the sum of its proper divisors (1547526638).

2155349266 is a wasteful number, since it uses less digits than its factorization.

2155349266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332985.

The product of its digits is 388800, while the sum is 43.

The square root of 2155349266 is about 46425.7392617500. The cubic root of 2155349266 is about 1291.7323971231.

The spelling of 2155349266 in words is "two billion, one hundred fifty-five million, three hundred forty-nine thousand, two hundred sixty-six".