2013620905 has 16 divisors (see below), whose sum is σ = 2582907264. Its totient is φ = 1503272320.

The previous prime is 2013620867. The next prime is 2013620911. The reversal of 2013620905 is 5090263102.

It is not a de Polignac number, because 2013620905 - 2¹⁷ = 2013489833 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208819 + ... + 218248.

It is an arithmetic number, because the mean of its divisors is an integer number (161431704).

Almost surely, 2^2013620905 is an apocalyptic number.

It is an amenable number.

2013620905 is a deficient number, since it is larger than the sum of its proper divisors (569286359).

2013620905 is a wasteful number, since it uses less digits than its factorization.

2013620905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427136.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 2013620905 is about 44873.3874919200. The cubic root of 2013620905 is about 1262.7747920625.

It can be divided in two parts, 20136 and 20905, that added together give a triangular number (41041 = T₂₈₆).

The spelling of 2013620905 in words is "two billion, thirteen million, six hundred twenty thousand, nine hundred five".