2167770649 has 8 divisors (see below), whose sum is σ = 2409460992. Its totient is φ = 1933517040.

The previous prime is 2167770641. The next prime is 2167770719. The reversal of 2167770649 is 9460777612.

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

It is a cyclic number.

It is not a de Polignac number, because 2167770649 - 2³ = 2167770641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2167770641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1858569 + ... + 1859734.

It is an arithmetic number, because the mean of its divisors is an integer number (301182624).

Almost surely, 2^2167770649 is an apocalyptic number.

It is an amenable number.

2167770649 is a deficient number, since it is larger than the sum of its proper divisors (241690343).

2167770649 is a wasteful number, since it uses less digits than its factorization.

2167770649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3718367.

The product of its (nonzero) digits is 889056, while the sum is 49.

The square root of 2167770649 is about 46559.3239749032. The cubic root of 2167770649 is about 1294.2090843891.

The spelling of 2167770649 in words is "two billion, one hundred sixty-seven million, seven hundred seventy thousand, six hundred forty-nine".