1386181157 has 24 divisors (see below), whose sum is σ = 1497275136. Its totient is φ = 1282811904.

The previous prime is 1386181127. The next prime is 1386181183. The reversal of 1386181157 is 7511816831.

It is a de Polignac number, because none of the positive numbers 2^k-1386181157 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 (1386181127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5393573 + ... + 5393829.

It is an arithmetic number, because the mean of its divisors is an integer number (62386464).

Almost surely, 2^1386181157 is an apocalyptic number.

It is an amenable number.

1386181157 is a deficient number, since it is larger than the sum of its proper divisors (111093979).

1386181157 is a wasteful number, since it uses less digits than its factorization.

1386181157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585 (or 566 counting only the distinct ones).

The product of its digits is 40320, while the sum is 41.

The square root of 1386181157 is about 37231.4538663211. The cubic root of 1386181157 is about 1114.9960537977.

Adding to 1386181157 its reverse (7511816831), we get a palindrome (8897997988).

The spelling of 1386181157 in words is "one billion, three hundred eighty-six million, one hundred eighty-one thousand, one hundred fifty-seven".