201389564 has 12 divisors (see below), whose sum is σ = 367755024. Its totient is φ = 96316704.

The previous prime is 201389563. The next prime is 201389593. The reversal of 201389564 is 465983102.

It is a happy number.

201389564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×201389564² = 81115512976220192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201389561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1094417 + ... + 1094600.

It is an arithmetic number, because the mean of its divisors is an integer number (30646252).

Almost surely, 2^201389564 is an apocalyptic number.

It is an amenable number.

201389564 is a deficient number, since it is larger than the sum of its proper divisors (166365460).

201389564 is a wasteful number, since it uses less digits than its factorization.

201389564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189044 (or 2189042 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 201389564 is about 14191.1790912524. The cubic root of 201389564 is about 586.1547929825.

The spelling of 201389564 in words is "two hundred one million, three hundred eighty-nine thousand, five hundred sixty-four".