2145678334 has 8 divisors (see below), whose sum is σ = 3223448280. Its totient is φ = 1071195576.

The previous prime is 2145678323. The next prime is 2145678343. The reversal of 2145678334 is 4338765412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 820164 + ... + 822775.

It is an arithmetic number, because the mean of its divisors is an integer number (402931035).

Almost surely, 2^2145678334 is an apocalyptic number.

2145678334 is a deficient number, since it is larger than the sum of its proper divisors (1077769946).

2145678334 is a wasteful number, since it uses less digits than its factorization.

2145678334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643594.

The product of its digits is 483840, while the sum is 43.

The square root of 2145678334 is about 46321.4673126834. The cubic root of 2145678334 is about 1289.7975232559.

The spelling of 2145678334 in words is "two billion, one hundred forty-five million, six hundred seventy-eight thousand, three hundred thirty-four".