2153947389 has 16 divisors (see below), whose sum is σ = 3134799360. Its totient is φ = 1304678960.

The previous prime is 2153947321. The next prime is 2153947409. The reversal of 2153947389 is 9837493512.

It is a cyclic number.

It is not a de Polignac number, because 2153947389 - 2⁷ = 2153947261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153947319) 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, 43282 + ... + 78620.

It is an arithmetic number, because the mean of its divisors is an integer number (195924960).

Almost surely, 2^2153947389 is an apocalyptic number.

It is an amenable number.

2153947389 is a deficient number, since it is larger than the sum of its proper divisors (980851971).

2153947389 is a wasteful number, since it uses less digits than its factorization.

2153947389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37200.

The product of its digits is 1632960, while the sum is 51.

The square root of 2153947389 is about 46410.6387480285. The cubic root of 2153947389 is about 1291.4522812410.

The spelling of 2153947389 in words is "two billion, one hundred fifty-three million, nine hundred forty-seven thousand, three hundred eighty-nine".