2190134380 has 72 divisors (see below), whose sum is σ = 5418100800. Its totient is φ = 741371904.

The previous prime is 2190134371. The next prime is 2190134381. The reversal of 2190134380 is 834310912.

It is not an unprimeable number, because it can be changed into a prime (2190134381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63276 + ... + 91564.

It is an arithmetic number, because the mean of its divisors is an integer number (75251400).

Almost surely, 2^2190134380 is an apocalyptic number.

2190134380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2190134380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2709050400).

2190134380 is an abundant number, since it is smaller than the sum of its proper divisors (3227966420).

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

2190134380 is a wasteful number, since it uses less digits than its factorization.

2190134380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28391 (or 28382 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 2190134380 is about 46798.8715675923. The cubic root of 2190134380 is about 1298.6444212773.

The spelling of 2190134380 in words is "two billion, one hundred ninety million, one hundred thirty-four thousand, three hundred eighty".