418032621989 has 2 divisors, whose sum is σ = 418032621990. Its totient is φ = 418032621988.

The previous prime is 418032621977. The next prime is 418032621997. The reversal of 418032621989 is 989126230814.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 341006945764 + 77025676225 = 583958^2 + 277535^2 .

It is a cyclic number.

It is not a de Polignac number, because 418032621989 - 2⁸ = 418032621733 is a prime.

It is a super-2 number, since 2×418032621989² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 418032621989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (418032621949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209016310994 + 209016310995.

It is an arithmetic number, because the mean of its divisors is an integer number (209016310995).

Almost surely, 2^418032621989 is an apocalyptic number.

It is an amenable number.

418032621989 is a deficient number, since it is larger than the sum of its proper divisors (1).

418032621989 is an equidigital number, since it uses as much as digits as its factorization.

418032621989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The spelling of 418032621989 in words is "four hundred eighteen billion, thirty-two million, six hundred twenty-one thousand, nine hundred eighty-nine".