201418997 has 16 divisors (see below), whose sum is σ = 225942528. Its totient is φ = 178295040.

The previous prime is 201418991. The next prime is 201418999. The reversal of 201418997 is 799814102.

It is a cyclic number.

It is not a de Polignac number, because 201418997 - 2⁶ = 201418933 is a prime.

It is a super-2 number, since 2×201418997² = 81139224704972018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201418991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43328 + ... + 47750.

It is an arithmetic number, because the mean of its divisors is an integer number (14121408).

Almost surely, 2^201418997 is an apocalyptic number.

It is an amenable number.

201418997 is a deficient number, since it is larger than the sum of its proper divisors (24523531).

201418997 is a wasteful number, since it uses less digits than its factorization.

201418997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4580.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 201418997 is about 14192.2160707904. The cubic root of 201418997 is about 586.1833470169.

The spelling of 201418997 in words is "two hundred one million, four hundred eighteen thousand, nine hundred ninety-seven".