166738830 has 64 divisors (see below), whose sum is σ = 408006720. Its totient is φ = 43602944.

The previous prime is 166738823. The next prime is 166738837. The reversal of 166738830 is 38837661.

It is an interprime number because it is at equal distance from previous prime (166738823) and next prime (166738837).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166738837) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 525832 + ... + 526148.

It is an arithmetic number, because the mean of its divisors is an integer number (6375105).

Almost surely, 2^166738830 is an apocalyptic number.

166738830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166738830 is an abundant number, since it is smaller than the sum of its proper divisors (241267890).

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

166738830 is a wasteful number, since it uses less digits than its factorization.

166738830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 166738830 is about 12912.7390587745. The cubic root of 166738830 is about 550.4006227141.

The spelling of 166738830 in words is "one hundred sixty-six million, seven hundred thirty-eight thousand, eight hundred thirty".