201649212 has 18 divisors (see below), whose sum is σ = 509724488. Its totient is φ = 67216392.

The previous prime is 201649187. The next prime is 201649229. The reversal of 201649212 is 212946102.

201649212 is a `hidden beast` number, since 2 + 0 + 1 + 649 + 2 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2800648 + ... + 2800719.

Almost surely, 2^201649212 is an apocalyptic number.

It is an amenable number.

201649212 is an abundant number, since it is smaller than the sum of its proper divisors (308075276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201649212 is a wasteful number, since it uses less digits than its factorization.

201649212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5601377 (or 5601372 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 201649212 is about 14200.3243624926. The cubic root of 201649212 is about 586.4065911335.

The spelling of 201649212 in words is "two hundred one million, six hundred forty-nine thousand, two hundred twelve".