201318669 has 8 divisors (see below), whose sum is σ = 298249920. Its totient is φ = 134212428.

The previous prime is 201318629. The next prime is 201318673. The reversal of 201318669 is 966813102.

It is not a de Polignac number, because 201318669 - 2⁷ = 201318541 is a prime.

It is a super-2 number, since 2×201318669² = 81058412975863122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201318629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3728097 + ... + 3728150.

It is an arithmetic number, because the mean of its divisors is an integer number (37281240).

Almost surely, 2^201318669 is an apocalyptic number.

It is an amenable number.

201318669 is a deficient number, since it is larger than the sum of its proper divisors (96931251).

201318669 is an equidigital number, since it uses as much as digits as its factorization.

201318669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7456256 (or 7456250 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 201318669 is about 14188.6810169233. The cubic root of 201318669 is about 586.0860037159.

The spelling of 201318669 in words is "two hundred one million, three hundred eighteen thousand, six hundred sixty-nine".