2049545890 has 16 divisors (see below), whose sum is σ = 4216208832. Its totient is φ = 702701424.

The previous prime is 2049545837. The next prime is 2049545899. The reversal of 2049545890 is 985459402.

It is a self number, because there is not a number n which added to its sum of digits gives 2049545890.

It is not an unprimeable number, because it can be changed into a prime (2049545899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14639544 + ... + 14639683.

It is an arithmetic number, because the mean of its divisors is an integer number (263513052).

Almost surely, 2^2049545890 is an apocalyptic number.

2049545890 is an abundant number, since it is smaller than the sum of its proper divisors (2166662942).

2049545890 is a wasteful number, since it uses less digits than its factorization.

2049545890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29279241.

The product of its (nonzero) digits is 518400, while the sum is 46.

The square root of 2049545890 is about 45271.9106069094. The cubic root of 2049545890 is about 1270.2402856155.

The spelling of 2049545890 in words is "two billion, forty-nine million, five hundred forty-five thousand, eight hundred ninety".