2158730715 has 16 divisors (see below), whose sum is σ = 3455589888. Its totient is φ = 1150782816.

The previous prime is 2158730713. The next prime is 2158730719. The reversal of 2158730715 is 5170378512.

It is not a de Polignac number, because 2158730715 - 2¹ = 2158730713 is a prime.

It is a super-2 number, since 2×2158730715² = 9320236599768822450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2158730713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 382 + ... + 65708.

It is an arithmetic number, because the mean of its divisors is an integer number (215974368).

Almost surely, 2^2158730715 is an apocalyptic number.

2158730715 is a deficient number, since it is larger than the sum of its proper divisors (1296859173).

2158730715 is a wasteful number, since it uses less digits than its factorization.

2158730715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67538.

The product of its (nonzero) digits is 58800, while the sum is 39.

The square root of 2158730715 is about 46462.1428154148. The cubic root of 2158730715 is about 1292.4075614770.

The spelling of 2158730715 in words is "two billion, one hundred fifty-eight million, seven hundred thirty thousand, seven hundred fifteen".