2013620090 has 24 divisors (see below), whose sum is σ = 3662438652. Its totient is φ = 797107200.

The previous prime is 2013620033. The next prime is 2013620099. The reversal of 2013620090 is 900263102.

It can be written as a sum of positive squares in 6 ways, for example, as 479566201 + 1534053889 = 21899^2 + 39167^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2013620099) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83390 + ... + 104790.

Almost surely, 2^2013620090 is an apocalyptic number.

2013620090 is a deficient number, since it is larger than the sum of its proper divisors (1648818562).

2013620090 is an equidigital number, since it uses as much as digits as its factorization.

2013620090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21602 (or 21505 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 2013620090 is about 44873.3784108128. The cubic root of 2013620090 is about 1262.7746216958.

Adding to 2013620090 its reverse (900263102), we get a palindrome (2913883192).

The spelling of 2013620090 in words is "two billion, thirteen million, six hundred twenty thousand, ninety".