2049366857 has 4 divisors (see below), whose sum is σ = 2056608720. Its totient is φ = 2042124996.

The previous prime is 2049366853. The next prime is 2049366859. The reversal of 2049366857 is 7586639402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2049366857 - 2² = 2049366853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2049366853) 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 3 ways as a sum of consecutive naturals, for example, 3620507 + ... + 3621072.

It is an arithmetic number, because the mean of its divisors is an integer number (514152180).

Almost surely, 2^2049366857 is an apocalyptic number.

It is an amenable number.

2049366857 is a deficient number, since it is larger than the sum of its proper divisors (7241863).

2049366857 is an equidigital number, since it uses as much as digits as its factorization.

2049366857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7241862.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The square root of 2049366857 is about 45269.9332559702. The cubic root of 2049366857 is about 1270.2032983081.

The spelling of 2049366857 in words is "two billion, forty-nine million, three hundred sixty-six thousand, eight hundred fifty-seven".