2149878214 has 16 divisors (see below), whose sum is σ = 3603788496. Its totient is φ = 953382400.

The previous prime is 2149878193. The next prime is 2149878217. The reversal of 2149878214 is 4128789412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149878217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1190827 + ... + 1192630.

It is an arithmetic number, because the mean of its divisors is an integer number (225236781).

Almost surely, 2^2149878214 is an apocalyptic number.

2149878214 is a deficient number, since it is larger than the sum of its proper divisors (1453910282).

2149878214 is a wasteful number, since it uses less digits than its factorization.

2149878214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383511.

The product of its digits is 258048, while the sum is 46.

The square root of 2149878214 is about 46366.7792066691. The cubic root of 2149878214 is about 1290.6385104977.

The spelling of 2149878214 in words is "two billion, one hundred forty-nine million, eight hundred seventy-eight thousand, two hundred fourteen".