166078446 has 16 divisors (see below), whose sum is σ = 346598784. Its totient is φ = 52952504.

The previous prime is 166078433. The next prime is 166078489. The reversal of 166078446 is 644870661.

It is a junction number, because it is equal to n+sod(n) for n = 166078398 and 166078407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 601596 + ... + 601871.

It is an arithmetic number, because the mean of its divisors is an integer number (21662424).

Almost surely, 2^166078446 is an apocalyptic number.

166078446 is an abundant number, since it is smaller than the sum of its proper divisors (180520338).

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

166078446 is a wasteful number, since it uses less digits than its factorization.

166078446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203495.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 166078446 is about 12887.1426623593. The cubic root of 166078446 is about 549.6730243839.

The spelling of 166078446 in words is "one hundred sixty-six million, seventy-eight thousand, four hundred forty-six".