2135811630 has 32 divisors (see below), whose sum is σ = 5150256768. Its totient is φ = 566848800.

The previous prime is 2135811611. The next prime is 2135811631. The reversal of 2135811630 is 361185312.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2135811631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162376 + ... + 175035.

It is an arithmetic number, because the mean of its divisors is an integer number (160945524).

Almost surely, 2^2135811630 is an apocalyptic number.

2135811630 is an abundant number, since it is smaller than the sum of its proper divisors (3014445138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2135811630 is a wasteful number, since it uses less digits than its factorization.

2135811630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337632.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 2135811630 is about 46214.8420964521. The cubic root of 2135811630 is about 1287.8174801325.

Adding to 2135811630 its reverse (361185312), we get a palindrome (2496996942).

The spelling of 2135811630 in words is "two billion, one hundred thirty-five million, eight hundred eleven thousand, six hundred thirty".