2144851690 has 32 divisors (see below), whose sum is σ = 3934365696. Its totient is φ = 841703040.

The previous prime is 2144851669. The next prime is 2144851691. The reversal of 2144851690 is 961584412.

It is a super-2 number, since 2×2144851690² = 9200777544191712200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2144851691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131739 + ... + 147121.

It is an arithmetic number, because the mean of its divisors is an integer number (122948928).

Almost surely, 2^2144851690 is an apocalyptic number.

2144851690 is a deficient number, since it is larger than the sum of its proper divisors (1789514006).

2144851690 is a wasteful number, since it uses less digits than its factorization.

2144851690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15654.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 2144851690 is about 46312.5435492373. The cubic root of 2144851690 is about 1289.6318661895.

The spelling of 2144851690 in words is "two billion, one hundred forty-four million, eight hundred fifty-one thousand, six hundred ninety".