201618445 has 8 divisors (see below), whose sum is σ = 276505344. Its totient is φ = 138252624.

The previous prime is 201618427. The next prime is 201618457. The reversal of 201618445 is 544816102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201618445 - 2¹¹ = 201616397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2880229 + ... + 2880298.

It is an arithmetic number, because the mean of its divisors is an integer number (34563168).

Almost surely, 2^201618445 is an apocalyptic number.

It is an amenable number.

201618445 is a deficient number, since it is larger than the sum of its proper divisors (74886899).

201618445 is an equidigital number, since it uses as much as digits as its factorization.

201618445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5760539.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 201618445 is about 14199.2410008423. The cubic root of 201618445 is about 586.3767655946.

The spelling of 201618445 in words is "two hundred one million, six hundred eighteen thousand, four hundred forty-five".