166540384 has 12 divisors (see below), whose sum is σ = 327876444. Its totient is φ = 83270176.

The previous prime is 166540331. The next prime is 166540393. The reversal of 166540384 is 483045661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2602162 + ... + 2602225.

It is an arithmetic number, because the mean of its divisors is an integer number (27323037).

Almost surely, 2^166540384 is an apocalyptic number.

It is an amenable number.

166540384 is a deficient number, since it is larger than the sum of its proper divisors (161336060).

166540384 is an equidigital number, since it uses as much as digits as its factorization.

166540384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5204397 (or 5204389 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 166540384 is about 12905.0526539027. The cubic root of 166540384 is about 550.1821809704.

The spelling of 166540384 in words is "one hundred sixty-six million, five hundred forty thousand, three hundred eighty-four".