103990186 has 8 divisors (see below), whose sum is σ = 159789924. Its totient is φ = 50726880.

The previous prime is 103990163. The next prime is 103990217. The reversal of 103990186 is 681099301.

It can be written as a sum of positive squares in 2 ways, for example, as 94187025 + 9803161 = 9705^2 + 3131^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 in 3 ways as a sum of consecutive naturals, for example, 634005 + ... + 634168.

Almost surely, 2^103990186 is an apocalyptic number.

103990186 is a deficient number, since it is larger than the sum of its proper divisors (55799738).

103990186 is a wasteful number, since it uses less digits than its factorization.

103990186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268216.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 103990186 is about 10197.5578448960. The cubic root of 103990186 is about 470.2521447720.

The spelling of 103990186 in words is "one hundred three million, nine hundred ninety thousand, one hundred eighty-six".