2158305789 has 16 divisors (see below), whose sum is σ = 2893422528. Its totient is φ = 1431048192.

The previous prime is 2158305769. The next prime is 2158305811. The reversal of 2158305789 is 9875038512.

It is not a de Polignac number, because 2158305789 - 2⁷ = 2158305661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158305739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 604999 + ... + 608555.

It is an arithmetic number, because the mean of its divisors is an integer number (180838908).

Almost surely, 2^2158305789 is an apocalyptic number.

It is an amenable number.

2158305789 is a deficient number, since it is larger than the sum of its proper divisors (735116739).

2158305789 is a wasteful number, since it uses less digits than its factorization.

2158305789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4604.

The product of its (nonzero) digits is 604800, while the sum is 48.

The square root of 2158305789 is about 46457.5697707058. The cubic root of 2158305789 is about 1292.3227564557.

The spelling of 2158305789 in words is "two billion, one hundred fifty-eight million, three hundred five thousand, seven hundred eighty-nine".