1386166538 has 8 divisors (see below), whose sum is σ = 2082112032. Its totient is φ = 692129196.

The previous prime is 1386166531. The next prime is 1386166543. The reversal of 1386166538 is 8356616831.

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

It is a junction number, because it is equal to n+sod(n) for n = 1386166492 and 1386166501.

It is not an unprimeable number, because it can be changed into a prime (1386166531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475220 + ... + 478127.

It is an arithmetic number, because the mean of its divisors is an integer number (260264004).

Almost surely, 2^1386166538 is an apocalyptic number.

1386166538 is a deficient number, since it is larger than the sum of its proper divisors (695945494).

1386166538 is an equidigital number, since it uses as much as digits as its factorization.

1386166538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954076.

The product of its digits is 622080, while the sum is 47.

The square root of 1386166538 is about 37231.2575398683. The cubic root of 1386166538 is about 1114.9921341117.

The spelling of 1386166538 in words is "one billion, three hundred eighty-six million, one hundred sixty-six thousand, five hundred thirty-eight".