166153650 has 96 divisors (see below), whose sum is σ = 447679680. Its totient is φ = 40538880.

The previous prime is 166153649. The next prime is 166153667. The reversal of 166153650 is 56351661.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 270744 + ... + 271356.

It is an arithmetic number, because the mean of its divisors is an integer number (4663330).

Almost surely, 2^166153650 is an apocalyptic number.

166153650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 166153650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223839840).

166153650 is an abundant number, since it is smaller than the sum of its proper divisors (281526030).

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

166153650 is a wasteful number, since it uses less digits than its factorization.

166153650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 166153650 is about 12890.0601239870. The cubic root of 166153650 is about 549.7559799052.

The spelling of 166153650 in words is "one hundred sixty-six million, one hundred fifty-three thousand, six hundred fifty".