1386963880 has 16 divisors (see below), whose sum is σ = 3120668820. Its totient is φ = 554785536.

The previous prime is 1386963859. The next prime is 1386963883. The reversal of 1386963880 is 883696831.

It can be written as a sum of positive squares in 2 ways, for example, as 1349680644 + 37283236 = 36738^2 + 6106^2 .

It is not an unprimeable number, because it can be changed into a prime (1386963883) 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, 17337009 + ... + 17337088.

Almost surely, 2^1386963880 is an apocalyptic number.

1386963880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1386963880 is an abundant number, since it is smaller than the sum of its proper divisors (1733704940).

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

1386963880 is a wasteful number, since it uses less digits than its factorization.

1386963880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34674108 (or 34674104 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 52.

The square root of 1386963880 is about 37241.9639653980. The cubic root of 1386963880 is about 1115.2058793887.

The spelling of 1386963880 in words is "one billion, three hundred eighty-six million, nine hundred sixty-three thousand, eight hundred eighty".