166361830 has 16 divisors (see below), whose sum is σ = 317066400. Its totient is φ = 62630272.

The previous prime is 166361827. The next prime is 166361837. The reversal of 166361830 is 38163661.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166361837) by changing a digit.

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, 489130 + ... + 489469.

It is an arithmetic number, because the mean of its divisors is an integer number (19816650).

Almost surely, 2^166361830 is an apocalyptic number.

166361830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166361830 is a deficient number, since it is larger than the sum of its proper divisors (150704570).

166361830 is a wasteful number, since it uses less digits than its factorization.

166361830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978623.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 166361830 is about 12898.1328106048. The cubic root of 166361830 is about 549.9854872204.

The spelling of 166361830 in words is "one hundred sixty-six million, three hundred sixty-one thousand, eight hundred thirty".