2189450507 has 4 divisors (see below), whose sum is σ = 2191390920. Its totient is φ = 2187510096.

The previous prime is 2189450489. The next prime is 2189450521. The reversal of 2189450507 is 7050549812.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2189450507 - 2¹² = 2189446411 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2189450407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 968513 + ... + 970770.

It is an arithmetic number, because the mean of its divisors is an integer number (547847730).

Almost surely, 2^2189450507 is an apocalyptic number.

2189450507 is a deficient number, since it is larger than the sum of its proper divisors (1940413).

2189450507 is a wasteful number, since it uses less digits than its factorization.

2189450507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940412.

The product of its (nonzero) digits is 100800, while the sum is 41.

The square root of 2189450507 is about 46791.5644854925. The cubic root of 2189450507 is about 1298.5092392662.

The spelling of 2189450507 in words is "two billion, one hundred eighty-nine million, four hundred fifty thousand, five hundred seven".