2189511210 has 16 divisors (see below), whose sum is σ = 5254826976. Its totient is φ = 583869648.

The previous prime is 2189511193. The next prime is 2189511239. The reversal of 2189511210 is 121159812.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 72983707 = 2189511210 / (2 + 1 + 8 + 9 + 5 + 1 + 1 + 2 + 1 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36491824 + ... + 36491883.

It is an arithmetic number, because the mean of its divisors is an integer number (328426686).

Almost surely, 2^2189511210 is an apocalyptic number.

2189511210 is an abundant number, since it is smaller than the sum of its proper divisors (3065315766).

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

2189511210 is a wasteful number, since it uses less digits than its factorization.

2189511210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72983717.

The product of its (nonzero) digits is 1440, while the sum is 30.

The square root of 2189511210 is about 46792.2131342385. The cubic root of 2189511210 is about 1298.5212396406.

The spelling of 2189511210 in words is "two billion, one hundred eighty-nine million, five hundred eleven thousand, two hundred ten".