201868544 has 18 divisors (see below), whose sum is σ = 402949050. Its totient is φ = 100934144.

The previous prime is 201868519. The next prime is 201868547. The reversal of 201868544 is 445868102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 184960000 + 16908544 = 13600^2 + 4112^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201868498 and 201868507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201868547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394019 + ... + 394530.

Almost surely, 2^201868544 is an apocalyptic number.

It is an amenable number.

201868544 is a deficient number, since it is larger than the sum of its proper divisors (201080506).

201868544 is an frugal number, since it uses more digits than its factorization.

201868544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788565 (or 788551 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 201868544 is about 14208.0450449736. The cubic root of 201868544 is about 586.6191237873.

The spelling of 201868544 in words is "two hundred one million, eight hundred sixty-eight thousand, five hundred forty-four".