2171006738 has 8 divisors (see below), whose sum is σ = 3256741488. Its totient is φ = 1085426244.

The previous prime is 2171006713. The next prime is 2171006741. The reversal of 2171006738 is 8376001712.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2171006698 and 2171006707.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7745 + ... + 66347.

It is an arithmetic number, because the mean of its divisors is an integer number (407092686).

Almost surely, 2^2171006738 is an apocalyptic number.

2171006738 is a deficient number, since it is larger than the sum of its proper divisors (1085734750).

2171006738 is a wasteful number, since it uses less digits than its factorization.

2171006738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77128.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 2171006738 is about 46594.0633342918. The cubic root of 2171006738 is about 1294.8527707876.

The spelling of 2171006738 in words is "two billion, one hundred seventy-one million, six thousand, seven hundred thirty-eight".