2161254214 has 16 divisors (see below), whose sum is σ = 3727196928. Its totient is φ = 920704392.

The previous prime is 2161254209. The next prime is 2161254233. The reversal of 2161254214 is 4124521612.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 459864 + ... + 464539.

It is an arithmetic number, because the mean of its divisors is an integer number (232949808).

Almost surely, 2^2161254214 is an apocalyptic number.

2161254214 is a deficient number, since it is larger than the sum of its proper divisors (1565942714).

2161254214 is a wasteful number, since it uses less digits than its factorization.

2161254214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924579.

The product of its digits is 3840, while the sum is 28.

The square root of 2161254214 is about 46489.2913905988. The cubic root of 2161254214 is about 1292.9109621042.

Adding to 2161254214 its reverse (4124521612), we get a palindrome (6285775826).

The spelling of 2161254214 in words is "two billion, one hundred sixty-one million, two hundred fifty-four thousand, two hundred fourteen".