164161628 has 6 divisors (see below), whose sum is σ = 287282856. Its totient is φ = 82080812.

The previous prime is 164161619. The next prime is 164161631. The reversal of 164161628 is 826161461.

It is a super-2 number, since 2×164161628² = 53898080215220768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 20520200 + ... + 20520207.

It is an arithmetic number, because the mean of its divisors is an integer number (47880476).

Almost surely, 2^164161628 is an apocalyptic number.

It is an amenable number.

164161628 is a deficient number, since it is larger than the sum of its proper divisors (123121228).

164161628 is a wasteful number, since it uses less digits than its factorization.

164161628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41040411 (or 41040409 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 164161628 is about 12812.5574340176. The cubic root of 164161628 is about 547.5501262808.

The spelling of 164161628 in words is "one hundred sixty-four million, one hundred sixty-one thousand, six hundred twenty-eight".