2136678908 has 36 divisors (see below), whose sum is σ = 4684263192. Its totient is φ = 845278560.

The previous prime is 2136678889. The next prime is 2136678911. The reversal of 2136678908 is 8098766312.

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, 416738 + ... + 421833.

It is an arithmetic number, because the mean of its divisors is an integer number (130118422).

Almost surely, 2^2136678908 is an apocalyptic number.

2136678908 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2136678908 is an abundant number, since it is smaller than the sum of its proper divisors (2547584284).

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

2136678908 is a wasteful number, since it uses less digits than its factorization.

2136678908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838602 (or 838593 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 2136678908 is about 46224.2242552539. The cubic root of 2136678908 is about 1287.9917690085.

The spelling of 2136678908 in words is "two billion, one hundred thirty-six million, six hundred seventy-eight thousand, nine hundred eight".