166238902 has 4 divisors (see below), whose sum is σ = 249358356. Its totient is φ = 83119450.

The previous prime is 166238867. The next prime is 166238929. The reversal of 166238902 is 209832661.

166238902 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41559724 + ... + 41559727.

It is an arithmetic number, because the mean of its divisors is an integer number (62339589).

Almost surely, 2^166238902 is an apocalyptic number.

166238902 is a deficient number, since it is larger than the sum of its proper divisors (83119454).

166238902 is an equidigital number, since it uses as much as digits as its factorization.

166238902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83119453.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 166238902 is about 12893.3665890643. The cubic root of 166238902 is about 549.8499888406.

The spelling of 166238902 in words is "one hundred sixty-six million, two hundred thirty-eight thousand, nine hundred two".