1438127197 has 16 divisors (see below), whose sum is σ = 1636266240. Its totient is φ = 1254439872.

The previous prime is 1438127177. The next prime is 1438127203. The reversal of 1438127197 is 7917218341.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1438127197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438127167) 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, 22863 + ... + 58300.

It is an arithmetic number, because the mean of its divisors is an integer number (102266640).

Almost surely, 2^1438127197 is an apocalyptic number.

It is an amenable number.

1438127197 is a deficient number, since it is larger than the sum of its proper divisors (198139043).

1438127197 is a wasteful number, since it uses less digits than its factorization.

1438127197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81252.

The product of its digits is 84672, while the sum is 43.

The square root of 1438127197 is about 37922.6475473430. The cubic root of 1438127197 is about 1128.7534736367.

The spelling of 1438127197 in words is "one billion, four hundred thirty-eight million, one hundred twenty-seven thousand, one hundred ninety-seven".