1380634208 has 12 divisors (see below), whose sum is σ = 2718123660. Its totient is φ = 690317088.

The previous prime is 1380634207. The next prime is 1380634217. The reversal of 1380634208 is 8024360831.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380634207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21572378 + ... + 21572441.

It is an arithmetic number, because the mean of its divisors is an integer number (226510305).

Almost surely, 2^1380634208 is an apocalyptic number.

It is an amenable number.

1380634208 is a deficient number, since it is larger than the sum of its proper divisors (1337489452).

1380634208 is an equidigital number, since it uses as much as digits as its factorization.

1380634208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43144829 (or 43144821 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 1380634208 is about 37156.8864142301. The cubic root of 1380634208 is about 1113.5068077621.

The spelling of 1380634208 in words is "one billion, three hundred eighty million, six hundred thirty-four thousand, two hundred eight".