1380505147 has 16 divisors (see below), whose sum is σ = 1589018112. Its totient is φ = 1174849920.

The previous prime is 1380505141. The next prime is 1380505157. The reversal of 1380505147 is 7415050831.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1380505147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1380505141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 637747 + ... + 639907.

It is an arithmetic number, because the mean of its divisors is an integer number (99313632).

Almost surely, 2^1380505147 is an apocalyptic number.

1380505147 is a deficient number, since it is larger than the sum of its proper divisors (208512965).

1380505147 is a wasteful number, since it uses less digits than its factorization.

1380505147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2778.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 1380505147 is about 37155.1496699986. The cubic root of 1380505147 is about 1113.4721099931.

Adding to 1380505147 its reverse (7415050831), we get a palindrome (8795555978).

The spelling of 1380505147 in words is "one billion, three hundred eighty million, five hundred five thousand, one hundred forty-seven".