201964136 has 64 divisors (see below), whose sum is σ = 423576000. Its totient is φ = 89510400.

The previous prime is 201964117. The next prime is 201964153. The reversal of 201964136 is 631469102.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 957071 + ... + 957281.

It is an arithmetic number, because the mean of its divisors is an integer number (6618375).

Almost surely, 2^201964136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201964136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211788000).

201964136 is an abundant number, since it is smaller than the sum of its proper divisors (221611864).

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

201964136 is a wasteful number, since it uses less digits than its factorization.

201964136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 201964136 is about 14211.4086564281. The cubic root of 201964136 is about 586.7117042445.

The spelling of 201964136 in words is "two hundred one million, nine hundred sixty-four thousand, one hundred thirty-six".