211493738 has 8 divisors (see below), whose sum is σ = 320048388. Its totient is φ = 104810944.

The previous prime is 211493707. The next prime is 211493747. The reversal of 211493738 is 837394112.

211493738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 163149529 + 48344209 = 12773^2 + 6953^2 .

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

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, 467681 + ... + 468132.

Almost surely, 2^211493738 is an apocalyptic number.

211493738 is a deficient number, since it is larger than the sum of its proper divisors (108554650).

211493738 is a wasteful number, since it uses less digits than its factorization.

211493738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935928.

The product of its digits is 36288, while the sum is 38.

The square root of 211493738 is about 14542.8242786606. The cubic root of 211493738 is about 595.7981783661.

The spelling of 211493738 in words is "two hundred eleven million, four hundred ninety-three thousand, seven hundred thirty-eight".