2155504836 has 12 divisors (see below), whose sum is σ = 5029511312. Its totient is φ = 718501608.

The previous prime is 2155504829. The next prime is 2155504873. The reversal of 2155504836 is 6384055512.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 2155504794 and 2155504803.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89812690 + ... + 89812713.

Almost surely, 2^2155504836 is an apocalyptic number.

It is an amenable number.

2155504836 is an abundant number, since it is smaller than the sum of its proper divisors (2874006476).

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

2155504836 is a wasteful number, since it uses less digits than its factorization.

2155504836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179625410 (or 179625408 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 39.

The square root of 2155504836 is about 46427.4147029533. The cubic root of 2155504836 is about 1291.7634748356.

The spelling of 2155504836 in words is "two billion, one hundred fifty-five million, five hundred four thousand, eight hundred thirty-six".