2158924513 has 4 divisors (see below), whose sum is σ = 2167882948. Its totient is φ = 2149966080.

The previous prime is 2158924511. The next prime is 2158924541. The reversal of 2158924513 is 3154298512.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2011253409 + 147671104 = 44847^2 + 12152^2 .

It is a cyclic number.

It is not a de Polignac number, because 2158924513 - 2¹ = 2158924511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2158924511) 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 3 ways as a sum of consecutive naturals, for example, 4478856 + ... + 4479337.

It is an arithmetic number, because the mean of its divisors is an integer number (541970737).

Almost surely, 2^2158924513 is an apocalyptic number.

It is an amenable number.

2158924513 is a deficient number, since it is larger than the sum of its proper divisors (8958435).

2158924513 is an equidigital number, since it uses as much as digits as its factorization.

2158924513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8958434.

The product of its digits is 86400, while the sum is 40.

The square root of 2158924513 is about 46464.2283159852. The cubic root of 2158924513 is about 1292.4462352069.

The spelling of 2158924513 in words is "two billion, one hundred fifty-eight million, nine hundred twenty-four thousand, five hundred thirteen".