2011251867 has 8 divisors (see below), whose sum is σ = 2684118096. Its totient is φ = 1339610112.

The previous prime is 2011251841. The next prime is 2011251881. The reversal of 2011251867 is 7681521102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2011251867 - 2⁸ = 2011251611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2011251817) 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 7 ways as a sum of consecutive naturals, for example, 302278 + ... + 308859.

It is an arithmetic number, because the mean of its divisors is an integer number (335514762).

Almost surely, 2^2011251867 is an apocalyptic number.

2011251867 is a deficient number, since it is larger than the sum of its proper divisors (672866229).

2011251867 is a wasteful number, since it uses less digits than its factorization.

2011251867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612237.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 2011251867 is about 44846.9828082113. The cubic root of 2011251867 is about 1262.2793768257.

Adding to 2011251867 its reverse (7681521102), we get a palindrome (9692772969).

The spelling of 2011251867 in words is "two billion, eleven million, two hundred fifty-one thousand, eight hundred sixty-seven".