201988369 has 8 divisors (see below), whose sum is σ = 229931712. Its totient is φ = 175641840.

The previous prime is 201988361. The next prime is 201988387. The reversal of 201988369 is 963889102.

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

It is not a de Polignac number, because 201988369 - 2³ = 201988361 is a prime.

It is a super-2 number, since 2×201988369² = 81598602422560322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201988361) 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, 398934 + ... + 399439.

It is an arithmetic number, because the mean of its divisors is an integer number (28741464).

Almost surely, 2^201988369 is an apocalyptic number.

It is an amenable number.

201988369 is a deficient number, since it is larger than the sum of its proper divisors (27943343).

201988369 is a wasteful number, since it uses less digits than its factorization.

201988369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798407.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 201988369 is about 14212.2612205096. The cubic root of 201988369 is about 586.7351691632.

The spelling of 201988369 in words is "two hundred one million, nine hundred eighty-eight thousand, three hundred sixty-nine".