2015920873 has 4 divisors (see below), whose sum is σ = 2020732560. Its totient is φ = 2011109188.

The previous prime is 2015920867. The next prime is 2015920891. The reversal of 2015920873 is 3780295102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3780295102 = 2 ⋅1890147551.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2015920873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2015920853) 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, 2405215 + ... + 2406052.

It is an arithmetic number, because the mean of its divisors is an integer number (505183140).

Almost surely, 2^2015920873 is an apocalyptic number.

It is an amenable number.

2015920873 is a deficient number, since it is larger than the sum of its proper divisors (4811687).

2015920873 is an equidigital number, since it uses as much as digits as its factorization.

2015920873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4811686.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 2015920873 is about 44899.0074834623. The cubic root of 2015920873 is about 1263.2553917163.

The spelling of 2015920873 in words is "two billion, fifteen million, nine hundred twenty thousand, eight hundred seventy-three".