166139030 has 16 divisors (see below), whose sum is σ = 300371760. Its totient is φ = 66161952.

The previous prime is 166138997. The next prime is 166139033. The reversal of 166139030 is 30931661.

166139030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 166138984 and 166139002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166139033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34325 + ... + 38864.

It is an arithmetic number, because the mean of its divisors is an integer number (18773235).

Almost surely, 2^166139030 is an apocalyptic number.

166139030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166139030 is a deficient number, since it is larger than the sum of its proper divisors (134232730).

166139030 is a wasteful number, since it uses less digits than its factorization.

166139030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73423.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 166139030 is about 12889.4930078727. The cubic root of 166139030 is about 549.7398549346.

The spelling of 166139030 in words is "one hundred sixty-six million, one hundred thirty-nine thousand, thirty".