1388081513783 has 4 divisors (see below), whose sum is σ = 1400816206680. Its totient is φ = 1375346820888.

The previous prime is 1388081513779. The next prime is 1388081513789. The reversal of 1388081513783 is 3873151808831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1388081513783 - 2² = 1388081513779 is a prime.

It is a super-2 number, since 2×1388081513783² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388081513789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6367346285 + ... + 6367346502.

It is an arithmetic number, because the mean of its divisors is an integer number (350204051670).

Almost surely, 2^{1388081513783} is an apocalyptic number.

1388081513783 is a deficient number, since it is larger than the sum of its proper divisors (12734692897).

1388081513783 is a wasteful number, since it uses less digits than its factorization.

1388081513783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12734692896.

The product of its (nonzero) digits is 3870720, while the sum is 56.

The spelling of 1388081513783 in words is "one trillion, three hundred eighty-eight billion, eighty-one million, five hundred thirteen thousand, seven hundred eighty-three".