1438297166 has 16 divisors (see below), whose sum is σ = 2253947040. Its totient is φ = 687472800.

The previous prime is 1438297163. The next prime is 1438297177. The reversal of 1438297166 is 6617928341.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1438297166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438297163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116906 + ... + 128621.

It is an arithmetic number, because the mean of its divisors is an integer number (140871690).

Almost surely, 2^1438297166 is an apocalyptic number.

1438297166 is a deficient number, since it is larger than the sum of its proper divisors (815649874).

1438297166 is a wasteful number, since it uses less digits than its factorization.

1438297166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245659.

The product of its digits is 435456, while the sum is 47.

The square root of 1438297166 is about 37924.8884770938. Note that the first 3 decimals coincide. The cubic root of 1438297166 is about 1128.7979401581.

The spelling of 1438297166 in words is "one billion, four hundred thirty-eight million, two hundred ninety-seven thousand, one hundred sixty-six".