1380911968 has 36 divisors (see below), whose sum is σ = 2739437820. Its totient is φ = 685200320.

The previous prime is 1380911899. The next prime is 1380911969. The reversal of 1380911968 is 8691190831.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380911969) 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 5 ways as a sum of consecutive naturals, for example, 2812203 + ... + 2812693.

It is an arithmetic number, because the mean of its divisors is an integer number (76095495).

Almost surely, 2^1380911968 is an apocalyptic number.

It is an amenable number.

1380911968 is a deficient number, since it is larger than the sum of its proper divisors (1358525852).

1380911968 is an frugal number, since it uses more digits than its factorization.

1380911968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171 (or 672 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 46.

The square root of 1380911968 is about 37160.6238914257. The cubic root of 1380911968 is about 1113.5814755996.

The spelling of 1380911968 in words is "one billion, three hundred eighty million, nine hundred eleven thousand, nine hundred sixty-eight".