211013649 has 36 divisors (see below), whose sum is σ = 386802000. Its totient is φ = 109614960.

The previous prime is 211013629. The next prime is 211013659. The reversal of 211013649 is 946310112.

211013649 is a `hidden beast` number, since 2 + 1 + 1 + 0 + 13 + 649 = 666.

It is not a de Polignac number, because 211013649 - 2¹¹ = 211011601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211013609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 16899 + ... + 26600.

It is an arithmetic number, because the mean of its divisors is an integer number (10744500).

Almost surely, 2^211013649 is an apocalyptic number.

It is an amenable number.

211013649 is a deficient number, since it is larger than the sum of its proper divisors (175788351).

211013649 is a wasteful number, since it uses less digits than its factorization.

211013649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43530 (or 43520 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 211013649 is about 14526.3088566917. The cubic root of 211013649 is about 595.3470178716.

The spelling of 211013649 in words is "two hundred eleven million, thirteen thousand, six hundred forty-nine".