2189744715 has 16 divisors (see below), whose sum is σ = 3504307968. Its totient is φ = 1167625056.

The previous prime is 2189744681. The next prime is 2189744717. The reversal of 2189744715 is 5174479812.

It is not a de Polignac number, because 2189744715 - 2⁷ = 2189744587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2189744717) 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 15 ways as a sum of consecutive naturals, for example, 80602 + ... + 104288.

It is an arithmetic number, because the mean of its divisors is an integer number (219019248).

Almost surely, 2^2189744715 is an apocalyptic number.

2189744715 is a deficient number, since it is larger than the sum of its proper divisors (1314563253).

2189744715 is a wasteful number, since it uses less digits than its factorization.

2189744715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29858.

The product of its digits is 564480, while the sum is 48.

The square root of 2189744715 is about 46794.7081944102. The cubic root of 2189744715 is about 1298.5673991704.

The spelling of 2189744715 in words is "two billion, one hundred eighty-nine million, seven hundred forty-four thousand, seven hundred fifteen".