2108690136 has 48 divisors (see below), whose sum is σ = 6526899600. Its totient is φ = 602482752.

The previous prime is 2108690123. The next prime is 2108690159. The reversal of 2108690136 is 6310968012.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2108690136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2091451 + ... + 2092458.

It is an arithmetic number, because the mean of its divisors is an integer number (135977075).

Almost surely, 2^2108690136 is an apocalyptic number.

It is an amenable number.

2108690136 is an abundant number, since it is smaller than the sum of its proper divisors (4418209464).

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

2108690136 is a wasteful number, since it uses less digits than its factorization.

2108690136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4183928 (or 4183921 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 2108690136 is about 45920.4762170429. The cubic root of 2108690136 is about 1282.3431478318.

The spelling of 2108690136 in words is "two billion, one hundred eight million, six hundred ninety thousand, one hundred thirty-six".