2150955805 has 16 divisors (see below), whose sum is σ = 2605881600. Its totient is φ = 1704341952.

The previous prime is 2150955773. The next prime is 2150955823. The reversal of 2150955805 is 5085590512.

It is a cyclic number.

It is not a de Polignac number, because 2150955805 - 2⁵ = 2150955773 is a prime.

It is a super-2 number, since 2×2150955805² = 9253221750126396050, which contains 22 as substring.

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, 269482 + ... + 277348.

It is an arithmetic number, because the mean of its divisors is an integer number (162867600).

Almost surely, 2^2150955805 is an apocalyptic number.

It is an amenable number.

2150955805 is a deficient number, since it is larger than the sum of its proper divisors (454925795).

2150955805 is a wasteful number, since it uses less digits than its factorization.

2150955805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8388.

The product of its (nonzero) digits is 90000, while the sum is 40.

The square root of 2150955805 is about 46378.3980426232. The cubic root of 2150955805 is about 1290.8541115691.

It can be divided in two parts, 215095 and 5805, that added together give a square (220900 = 470²).

The spelling of 2150955805 in words is "two billion, one hundred fifty million, nine hundred fifty-five thousand, eight hundred five".