166501650 has 48 divisors (see below), whose sum is σ = 471916224. Its totient is φ = 38057280.

The previous prime is 166501649. The next prime is 166501667. The reversal of 166501650 is 56105661.

166501650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78237 + ... + 80336.

It is an arithmetic number, because the mean of its divisors is an integer number (9831588).

Almost surely, 2^166501650 is an apocalyptic number.

166501650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166501650 is an abundant number, since it is smaller than the sum of its proper divisors (305414574).

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

166501650 is a wasteful number, since it uses less digits than its factorization.

166501650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158595 (or 158590 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 166501650 is about 12903.5518366068. The cubic root of 166501650 is about 550.1395238313.

The spelling of 166501650 in words is "one hundred sixty-six million, five hundred one thousand, six hundred fifty".