418661901 has 24 divisors (see below), whose sum is σ = 692362944. Its totient is φ = 238806720.

The previous prime is 418661891. The next prime is 418661909. The reversal of 418661901 is 109166814.

It is a happy number.

It is not a de Polignac number, because 418661901 - 2⁹ = 418661389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (418661909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31321 + ... + 42641.

It is an arithmetic number, because the mean of its divisors is an integer number (28848456).

Almost surely, 2^418661901 is an apocalyptic number.

It is an amenable number.

418661901 is a deficient number, since it is larger than the sum of its proper divisors (273701043).

418661901 is a wasteful number, since it uses less digits than its factorization.

418661901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11921 (or 11918 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 418661901 is about 20461.2292152744. The cubic root of 418661901 is about 748.0910868562.

The spelling of 418661901 in words is "four hundred eighteen million, six hundred sixty-one thousand, nine hundred one".