2150973729 has 6 divisors (see below), whose sum is σ = 3106962066. Its totient is φ = 1433982480.

The previous prime is 2150973707. The next prime is 2150973733. The reversal of 2150973729 is 9273790512.

2150973729 is a `hidden beast` number, since 2 + 1 + 509 + 73 + 72 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1940578704 + 210395025 = 44052^2 + 14505^2 .

It is not a de Polignac number, because 2150973729 - 2⁹ = 2150973217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2150973749) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 119498532 + ... + 119498549.

It is an arithmetic number, because the mean of its divisors is an integer number (517827011).

Almost surely, 2^2150973729 is an apocalyptic number.

It is an amenable number.

2150973729 is a deficient number, since it is larger than the sum of its proper divisors (955988337).

2150973729 is a wasteful number, since it uses less digits than its factorization.

2150973729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238997087 (or 238997084 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 2150973729 is about 46378.5912787355. The cubic root of 2150973729 is about 1290.8576971387.

The spelling of 2150973729 in words is "two billion, one hundred fifty million, nine hundred seventy-three thousand, seven hundred twenty-nine".