1378157743 has 2 divisors, whose sum is σ = 1378157744. Its totient is φ = 1378157742.

The previous prime is 1378157719. The next prime is 1378157771. The reversal of 1378157743 is 3477518731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1378157743 - 2²¹ = 1376060591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1378157693 and 1378157702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1378157843) 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 as a sum of consecutive naturals, namely, 689078871 + 689078872.

It is an arithmetic number, because the mean of its divisors is an integer number (689078872).

Almost surely, 2^1378157743 is an apocalyptic number.

1378157743 is a deficient number, since it is larger than the sum of its proper divisors (1).

1378157743 is an equidigital number, since it uses as much as digits as its factorization.

1378157743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 493920, while the sum is 46.

The square root of 1378157743 is about 37123.5470153379. The cubic root of 1378157743 is about 1112.8406378175.

The spelling of 1378157743 in words is "one billion, three hundred seventy-eight million, one hundred fifty-seven thousand, seven hundred forty-three".