2149021277 has 64 divisors (see below), whose sum is σ = 2639831040. Its totient is φ = 1730937600.

The previous prime is 2149021271. The next prime is 2149021331. The reversal of 2149021277 is 7721209412.

It is a cyclic number.

It is not a de Polignac number, because 2149021277 - 2⁶ = 2149021213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149021271) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20084258 + ... + 20084364.

It is an arithmetic number, because the mean of its divisors is an integer number (41247360).

Almost surely, 2^2149021277 is an apocalyptic number.

It is an amenable number.

2149021277 is a deficient number, since it is larger than the sum of its proper divisors (490809763).

2149021277 is a wasteful number, since it uses less digits than its factorization.

2149021277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 2149021277 is about 46357.5374345963. The cubic root of 2149021277 is about 1290.4670057635.

The spelling of 2149021277 in words is "two billion, one hundred forty-nine million, twenty-one thousand, two hundred seventy-seven".