164057805 has 40 divisors (see below), whose sum is σ = 295476192. Its totient is φ = 87445008.

The previous prime is 164057681. The next prime is 164057813. The reversal of 164057805 is 508750461.

164057805 is a `hidden beast` number, since 1 + 640 + 5 + 7 + 8 + 0 + 5 = 666.

It is not a de Polignac number, because 164057805 - 2²⁶ = 96948941 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 164057805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 97582 + ... + 99248.

Almost surely, 2^164057805 is an apocalyptic number.

164057805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164057805 is a deficient number, since it is larger than the sum of its proper divisors (131418387).

164057805 is an frugal number, since it uses more digits than its factorization.

164057805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1699 (or 1675 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 164057805 is about 12808.5051821046. The cubic root of 164057805 is about 547.4346703810.

The spelling of 164057805 in words is "one hundred sixty-four million, fifty-seven thousand, eight hundred five".