1380738849 has 16 divisors (see below), whose sum is σ = 2108789760. Its totient is φ = 787191120.

The previous prime is 1380738841. The next prime is 1380738851. The reversal of 1380738849 is 9488370831.

It is not a de Polignac number, because 1380738849 - 2³ = 1380738841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1380738841) 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 in 15 ways as a sum of consecutive naturals, for example, 65667 + ... + 84104.

It is an arithmetic number, because the mean of its divisors is an integer number (131799360).

Almost surely, 2^1380738849 is an apocalyptic number.

It is an amenable number.

1380738849 is a deficient number, since it is larger than the sum of its proper divisors (728050911).

1380738849 is a wasteful number, since it uses less digits than its factorization.

1380738849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150220.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 1380738849 is about 37158.2944845427. The cubic root of 1380738849 is about 1113.5349386799.

The spelling of 1380738849 in words is "one billion, three hundred eighty million, seven hundred thirty-eight thousand, eight hundred forty-nine".