1386181156 has 24 divisors (see below), whose sum is σ = 2574071136. Its totient is φ = 650908800.

The previous prime is 1386181127. The next prime is 1386181183. The reversal of 1386181156 is 6511816831.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9931 + ... + 53581.

It is an arithmetic number, because the mean of its divisors is an integer number (107252964).

Almost surely, 2^1386181156 is an apocalyptic number.

It is an amenable number.

1386181156 is a deficient number, since it is larger than the sum of its proper divisors (1187889980).

1386181156 is a wasteful number, since it uses less digits than its factorization.

1386181156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44139 (or 44137 counting only the distinct ones).

The product of its digits is 34560, while the sum is 40.

The square root of 1386181156 is about 37231.4538528916. The cubic root of 1386181156 is about 1114.9960535296.

Adding to 1386181156 its reverse (6511816831), we get a palindrome (7897997987).

The spelling of 1386181156 in words is "one billion, three hundred eighty-six million, one hundred eighty-one thousand, one hundred fifty-six".