166315478 has 16 divisors (see below), whose sum is σ = 285885600. Its totient is φ = 71084736.

The previous prime is 166315459. The next prime is 166315519. The reversal of 166315478 is 874513661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10703 + ... + 21146.

It is an arithmetic number, because the mean of its divisors is an integer number (17867850).

Almost surely, 2^166315478 is an apocalyptic number.

166315478 is a deficient number, since it is larger than the sum of its proper divisors (119570122).

166315478 is a wasteful number, since it uses less digits than its factorization.

166315478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32231.

The product of its digits is 120960, while the sum is 41.

The square root of 166315478 is about 12896.3358361978. The cubic root of 166315478 is about 549.9344031961.

The spelling of 166315478 in words is "one hundred sixty-six million, three hundred fifteen thousand, four hundred seventy-eight".