1386818040 has 32 divisors (see below), whose sum is σ = 4160454480. Its totient is φ = 369818112.

The previous prime is 1386817969. The next prime is 1386818063. The reversal of 1386818040 is 408186831.

It is a self number, because there is not a number n which added to its sum of digits gives 1386818040.

It is a congruent number.

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, 5778289 + ... + 5778528.

Almost surely, 2^1386818040 is an apocalyptic number.

1386818040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1386818040 is an abundant number, since it is smaller than the sum of its proper divisors (2773636440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1386818040 is a wasteful number, since it uses less digits than its factorization.

1386818040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11556831 (or 11556827 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 1386818040 is about 37240.0059076257. The cubic root of 1386818040 is about 1115.1667898520.

The spelling of 1386818040 in words is "one billion, three hundred eighty-six million, eight hundred eighteen thousand, forty".