418132621 has 2 divisors, whose sum is σ = 418132622. Its totient is φ = 418132620.

The previous prime is 418132609. The next prime is 418132661. The reversal of 418132621 is 126231814.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 400400100 + 17732521 = 20010^2 + 4211^2 .

It is a cyclic number.

It is not a de Polignac number, because 418132621 - 2²⁵ = 384578189 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 418132621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (418132661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209066310 + 209066311.

It is an arithmetic number, because the mean of its divisors is an integer number (209066311).

Almost surely, 2^418132621 is an apocalyptic number.

It is an amenable number.

418132621 is a deficient number, since it is larger than the sum of its proper divisors (1).

418132621 is an equidigital number, since it uses as much as digits as its factorization.

418132621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 28.

The square root of 418132621 is about 20448.2913956154. The cubic root of 418132621 is about 747.7757037890.

The spelling of 418132621 in words is "four hundred eighteen million, one hundred thirty-two thousand, six hundred twenty-one".