2150800981 has 16 divisors (see below), whose sum is σ = 2532616704. Its totient is φ = 1788321024.

The previous prime is 2150800963. The next prime is 2150800997. The reversal of 2150800981 is 1890080512.

It is not a de Polignac number, because 2150800981 - 2⁹ = 2150800469 is a prime.

It is a super-2 number, since 2×2150800981² = 9251889719741124722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2150809981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8251 + ... + 66103.

It is an arithmetic number, because the mean of its divisors is an integer number (158288544).

Almost surely, 2^2150800981 is an apocalyptic number.

It is an amenable number.

2150800981 is a deficient number, since it is larger than the sum of its proper divisors (381815723).

2150800981 is a wasteful number, since it uses less digits than its factorization.

2150800981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58020.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 2150800981 is about 46376.7288734339. The cubic root of 2150800981 is about 1290.8231392928.

The spelling of 2150800981 in words is "two billion, one hundred fifty million, eight hundred thousand, nine hundred eighty-one".