2149244187 has 4 divisors (see below), whose sum is σ = 2865658920. Its totient is φ = 1432829456.

The previous prime is 2149244129. The next prime is 2149244219. The reversal of 2149244187 is 7814429412.

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 2149244187 - 2¹⁶ = 2149178651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2149244107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 358207362 + ... + 358207367.

It is an arithmetic number, because the mean of its divisors is an integer number (716414730).

Almost surely, 2^2149244187 is an apocalyptic number.

2149244187 is a deficient number, since it is larger than the sum of its proper divisors (716414733).

2149244187 is an equidigital number, since it uses as much as digits as its factorization.

2149244187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716414732.

The product of its digits is 129024, while the sum is 42.

The square root of 2149244187 is about 46359.9416198942. The cubic root of 2149244187 is about 1290.5116226716.

The spelling of 2149244187 in words is "two billion, one hundred forty-nine million, two hundred forty-four thousand, one hundred eighty-seven".