201891244 has 6 divisors (see below), whose sum is σ = 353309684. Its totient is φ = 100945620.

The previous prime is 201891229. The next prime is 201891247. The reversal of 201891244 is 442198102.

It is not an unprimeable number, because it can be changed into a prime (201891247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25236402 + ... + 25236409.

Almost surely, 2^201891244 is an apocalyptic number.

It is an amenable number.

201891244 is a deficient number, since it is larger than the sum of its proper divisors (151418440).

201891244 is a wasteful number, since it uses less digits than its factorization.

201891244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50472815 (or 50472813 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 201891244 is about 14208.8438657056. The cubic root of 201891244 is about 586.6411112892.

The spelling of 201891244 in words is "two hundred one million, eight hundred ninety-one thousand, two hundred forty-four".