1380138143479 has 4 divisors (see below), whose sum is σ = 1381802967160. Its totient is φ = 1378473319800.

The previous prime is 1380138143459. The next prime is 1380138143513. The reversal of 1380138143479 is 9743418310831.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1380138143479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380138143429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 832410597 + ... + 832412254.

It is an arithmetic number, because the mean of its divisors is an integer number (345450741790).

Almost surely, 2^{1380138143479} is an apocalyptic number.

1380138143479 is a deficient number, since it is larger than the sum of its proper divisors (1664823681).

1380138143479 is an equidigital number, since it uses as much as digits as its factorization.

1380138143479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664823680.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 1380138143479 in words is "one trillion, three hundred eighty billion, one hundred thirty-eight million, one hundred forty-three thousand, four hundred seventy-nine".