2156671334 has 4 divisors (see below), whose sum is σ = 3235007004. Its totient is φ = 1078335666.

The previous prime is 2156671327. The next prime is 2156671367. The reversal of 2156671334 is 4331766512.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539167832 + ... + 539167835.

It is an arithmetic number, because the mean of its divisors is an integer number (808751751).

Almost surely, 2^2156671334 is an apocalyptic number.

2156671334 is a deficient number, since it is larger than the sum of its proper divisors (1078335670).

2156671334 is a wasteful number, since it uses less digits than its factorization.

2156671334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078335669.

The product of its digits is 90720, while the sum is 38.

The square root of 2156671334 is about 46439.9756029221. The cubic root of 2156671334 is about 1291.9964547152.

The spelling of 2156671334 in words is "two billion, one hundred fifty-six million, six hundred seventy-one thousand, three hundred thirty-four".