326487161889 has 32 divisors (see below), whose sum is σ = 554735882240. Its totient is φ = 185904824976.

The previous prime is 326487161821. The next prime is 326487161911. The reversal of 326487161889 is 988161784623.

326487161889 is a `hidden beast` number, since 3 + 2 + 6 + 4 + 8 + 7 + 1 + 618 + 8 + 9 = 666.

It is not a de Polignac number, because 326487161889 - 2⁷ = 326487161761 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (326487161989) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2998537 + ... + 3105510.

It is an arithmetic number, because the mean of its divisors is an integer number (17335496320).

Almost surely, 2^326487161889 is an apocalyptic number.

It is an amenable number.

326487161889 is a deficient number, since it is larger than the sum of its proper divisors (228248720351).

326487161889 is a wasteful number, since it uses less digits than its factorization.

326487161889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6104346 (or 6104340 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 63.

The spelling of 326487161889 in words is "three hundred twenty-six billion, four hundred eighty-seven million, one hundred sixty-one thousand, eight hundred eighty-nine".