2109550536 has 48 divisors (see below), whose sum is σ = 6049449900. Its totient is φ = 661819392.

The previous prime is 2109550529. The next prime is 2109550561. The reversal of 2109550536 is 6350559012.

It can be written as a sum of positive squares in 2 ways, for example, as 1788782436 + 320768100 = 42294^2 + 17910^2 .

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 2109550536.

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, 860521 + ... + 862968.

Almost surely, 2^2109550536 is an apocalyptic number.

It is an amenable number.

2109550536 is an abundant number, since it is smaller than the sum of its proper divisors (3939899364).

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

2109550536 is a wasteful number, since it uses less digits than its factorization.

2109550536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1723518 (or 1723511 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 36.

The square root of 2109550536 is about 45929.8436313471. The cubic root of 2109550536 is about 1282.5175338163.

It can be divided in two parts, 21095 and 50536, that added together give a triangular number (71631 = T₃₇₈).

The spelling of 2109550536 in words is "two billion, one hundred nine million, five hundred fifty thousand, five hundred thirty-six".