1380756611 has 4 divisors (see below), whose sum is σ = 1486968672. Its totient is φ = 1274544552.

The previous prime is 1380756593. The next prime is 1380756661. The reversal of 1380756611 is 1166570831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1166570831 = 1487 ⋅784513.

It is a cyclic number.

It is not a de Polignac number, because 1380756611 - 2¹⁰ = 1380755587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1380756661) 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 3 ways as a sum of consecutive naturals, for example, 53106011 + ... + 53106036.

It is an arithmetic number, because the mean of its divisors is an integer number (371742168).

Almost surely, 2^1380756611 is an apocalyptic number.

1380756611 is a deficient number, since it is larger than the sum of its proper divisors (106212061).

1380756611 is a wasteful number, since it uses less digits than its factorization.

1380756611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106212060.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 1380756611 is about 37158.5334882850. The cubic root of 1380756611 is about 1113.5397135444.

The spelling of 1380756611 in words is "one billion, three hundred eighty million, seven hundred fifty-six thousand, six hundred eleven".