164946681828 has 30 divisors (see below), whose sum is σ = 431203209206. Its totient is φ = 54982227168.

The previous prime is 164946681821. The next prime is 164946681853. The reversal of 164946681828 is 828186649461.

164946681828 is a `hidden beast` number, since 1 + 6 + 494 + 6 + 68 + 1 + 82 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 128294345124 + 36652336704 = 358182^2 + 191448^2 .

It is not an unprimeable number, because it can be changed into a prime (164946681821) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 254547025 + ... + 254547672.

Almost surely, 2^164946681828 is an apocalyptic number.

164946681828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

164946681828 is an abundant number, since it is smaller than the sum of its proper divisors (266256527378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164946681828 is a wasteful number, since it uses less digits than its factorization.

164946681828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509094713 (or 509094702 counting only the distinct ones).

The product of its digits is 31850496, while the sum is 63.

The spelling of 164946681828 in words is "one hundred sixty-four billion, nine hundred forty-six million, six hundred eighty-one thousand, eight hundred twenty-eight".