2049649867 has 16 divisors (see below), whose sum is σ = 2117096352. Its totient is φ = 1983421440.

The previous prime is 2049649801. The next prime is 2049649873. The reversal of 2049649867 is 7689469402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2049649867 - 2²⁷ = 1915432139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2049649067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2163888 + ... + 2164834.

It is an arithmetic number, because the mean of its divisors is an integer number (132318522).

Almost surely, 2^2049649867 is an apocalyptic number.

2049649867 is a deficient number, since it is larger than the sum of its proper divisors (67446485).

2049649867 is an equidigital number, since it uses as much as digits as its factorization.

2049649867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The square root of 2049649867 is about 45273.0589534217. The cubic root of 2049649867 is about 1270.2617657461.

The spelling of 2049649867 in words is "two billion, forty-nine million, six hundred forty-nine thousand, eight hundred sixty-seven".