2149784707 has 4 divisors (see below), whose sum is σ = 2456896816. Its totient is φ = 1842672600.

The previous prime is 2149784687. The next prime is 2149784783. The reversal of 2149784707 is 7074879412.

It is a happy number.

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 2149784707 - 2¹⁵ = 2149751939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2149784107) 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, 153556044 + ... + 153556057.

It is an arithmetic number, because the mean of its divisors is an integer number (614224204).

Almost surely, 2^2149784707 is an apocalyptic number.

2149784707 is a deficient number, since it is larger than the sum of its proper divisors (307112109).

2149784707 is an equidigital number, since it uses as much as digits as its factorization.

2149784707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307112108.

The product of its (nonzero) digits is 790272, while the sum is 49.

The square root of 2149784707 is about 46365.7708552333. The cubic root of 2149784707 is about 1290.6197985098.

The spelling of 2149784707 in words is "two billion, one hundred forty-nine million, seven hundred eighty-four thousand, seven hundred seven".