164445650 has 24 divisors (see below), whose sum is σ = 307471764. Its totient is φ = 65433600.

The previous prime is 164445637. The next prime is 164445661. The reversal of 164445650 is 56544461.

It can be written as a sum of positive squares in 6 ways, for example, as 75916369 + 88529281 = 8713^2 + 9409^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 164445650.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1130 + ... + 18170.

Almost surely, 2^164445650 is an apocalyptic number.

164445650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164445650 is a deficient number, since it is larger than the sum of its proper divisors (143026114).

164445650 is a wasteful number, since it uses less digits than its factorization.

164445650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17246 (or 17241 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 164445650 is about 12823.6363797481. The cubic root of 164445650 is about 547.8657231346.

The spelling of 164445650 in words is "one hundred sixty-four million, four hundred forty-five thousand, six hundred fifty".