166493930 has 32 divisors (see below), whose sum is σ = 311040000. Its totient is φ = 64090432.

The previous prime is 166493923. The next prime is 166493939. The reversal of 166493930 is 39394661.

It is not an unprimeable number, because it can be changed into a prime (166493939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110321 + ... + 111819.

It is an arithmetic number, because the mean of its divisors is an integer number (9720000).

Almost surely, 2^166493930 is an apocalyptic number.

166493930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166493930 is a deficient number, since it is larger than the sum of its proper divisors (144546070).

166493930 is a wasteful number, since it uses less digits than its factorization.

166493930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918.

The product of its (nonzero) digits is 104976, while the sum is 41.

The square root of 166493930 is about 12903.2526906978. The cubic root of 166493930 is about 550.1310211272.

It can be divided in two parts, 16 and 6493930, that added together give a palindrome (6493946).

The spelling of 166493930 in words is "one hundred sixty-six million, four hundred ninety-three thousand, nine hundred thirty".