2161614844 has 6 divisors (see below), whose sum is σ = 3782825984. Its totient is φ = 1080807420.

The previous prime is 2161614839. The next prime is 2161614877. The reversal of 2161614844 is 4484161612.

It is a super-2 number, since 2×2161614844² = 9345157467602288672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270201852 + ... + 270201859.

Almost surely, 2^2161614844 is an apocalyptic number.

It is an amenable number.

2161614844 is a deficient number, since it is larger than the sum of its proper divisors (1621211140).

2161614844 is a wasteful number, since it uses less digits than its factorization.

2161614844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540403715 (or 540403713 counting only the distinct ones).

The product of its digits is 36864, while the sum is 37.

The square root of 2161614844 is about 46493.1698639703. The cubic root of 2161614844 is about 1292.9828704350.

The spelling of 2161614844 in words is "two billion, one hundred sixty-one million, six hundred fourteen thousand, eight hundred forty-four".