164610945 has 12 divisors (see below), whose sum is σ = 285325716. Its totient is φ = 87792480.

The previous prime is 164610937. The next prime is 164610947. The reversal of 164610945 is 549016461.

164610945 is a `hidden beast` number, since 1 + 646 + 1 + 0 + 9 + 4 + 5 = 666.

164610945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 56430144 + 108180801 = 7512^2 + 10401^2 .

It is not a de Polignac number, because 164610945 - 2³ = 164610937 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (164610947) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1828966 + ... + 1829055.

It is an arithmetic number, because the mean of its divisors is an integer number (23777143).

Almost surely, 2^164610945 is an apocalyptic number.

164610945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164610945 is a deficient number, since it is larger than the sum of its proper divisors (120714771).

164610945 is a wasteful number, since it uses less digits than its factorization.

164610945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3658032 (or 3658029 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 164610945 is about 12830.0796957774. The cubic root of 164610945 is about 548.0492268013.

The spelling of 164610945 in words is "one hundred sixty-four million, six hundred ten thousand, nine hundred forty-five".