2185155266 has 8 divisors (see below), whose sum is σ = 3745980480. Its totient is φ = 936495108.

The previous prime is 2185155263. The next prime is 2185155283. The reversal of 2185155266 is 6625515812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2185155263) 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, 78041246 + ... + 78041273.

It is an arithmetic number, because the mean of its divisors is an integer number (468247560).

Almost surely, 2^2185155266 is an apocalyptic number.

2185155266 is a deficient number, since it is larger than the sum of its proper divisors (1560825214).

2185155266 is a wasteful number, since it uses less digits than its factorization.

2185155266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156082528.

The product of its digits is 144000, while the sum is 41.

The square root of 2185155266 is about 46745.6443532443. The cubic root of 2185155266 is about 1297.6595494588.

The spelling of 2185155266 in words is "two billion, one hundred eighty-five million, one hundred fifty-five thousand, two hundred sixty-six".