2126154636 has 48 divisors (see below), whose sum is σ = 5566858080. Its totient is φ = 701697600.

The previous prime is 2126154629. The next prime is 2126154647. The reversal of 2126154636 is 6364516212.

2126154636 is a `hidden beast` number, since 2 + 1 + 2 + 6 + 15 + 4 + 636 = 666.

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 2126154636.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86551 + ... + 108366.

It is an arithmetic number, because the mean of its divisors is an integer number (115976210).

Almost surely, 2^2126154636 is an apocalyptic number.

It is an amenable number.

2126154636 is an abundant number, since it is smaller than the sum of its proper divisors (3440703444).

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

2126154636 is a wasteful number, since it uses less digits than its factorization.

2126154636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195031 (or 195023 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 2126154636 is about 46110.2443715060. The cubic root of 2126154636 is about 1285.8736076216.

The spelling of 2126154636 in words is "two billion, one hundred twenty-six million, one hundred fifty-four thousand, six hundred thirty-six".