1386655390 has 8 divisors (see below), whose sum is σ = 2495979720. Its totient is φ = 554662152.

The previous prime is 1386655379. The next prime is 1386655409. The reversal of 1386655390 is 935566831.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1386655390.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69332760 + ... + 69332779.

It is an arithmetic number, because the mean of its divisors is an integer number (311997465).

Almost surely, 2^1386655390 is an apocalyptic number.

1386655390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1386655390 is a deficient number, since it is larger than the sum of its proper divisors (1109324330).

1386655390 is a wasteful number, since it uses less digits than its factorization.

1386655390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138665546.

The product of its (nonzero) digits is 583200, while the sum is 46.

The square root of 1386655390 is about 37237.8220362040. The cubic root of 1386655390 is about 1115.1231914936.

The spelling of 1386655390 in words is "one billion, three hundred eighty-six million, six hundred fifty-five thousand, three hundred ninety".