2170993305 has 32 divisors (see below), whose sum is σ = 3743066880. Its totient is φ = 1068145920.

The previous prime is 2170993303. The next prime is 2170993339. The reversal of 2170993305 is 5033990712.

It is not a de Polignac number, because 2170993305 - 2¹ = 2170993303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (2170993301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 542251 + ... + 546239.

It is an arithmetic number, because the mean of its divisors is an integer number (116970840).

Almost surely, 2^2170993305 is an apocalyptic number.

It is an amenable number.

2170993305 is a deficient number, since it is larger than the sum of its proper divisors (1572073575).

2170993305 is a wasteful number, since it uses less digits than its factorization.

2170993305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6801.

The product of its (nonzero) digits is 51030, while the sum is 39.

The square root of 2170993305 is about 46593.9191848035. The cubic root of 2170993305 is about 1294.8501001690.

The spelling of 2170993305 in words is "two billion, one hundred seventy million, nine hundred ninety-three thousand, three hundred five".