1351924378439 has 2 divisors, whose sum is σ = 1351924378440. Its totient is φ = 1351924378438.

The previous prime is 1351924378433. The next prime is 1351924378481. The reversal of 1351924378439 is 9348734291531.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1351924378439 - 2¹⁶ = 1351924312903 is a prime.

It is a super-3 number, since 3×1351924378439³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1351924378433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675962189219 + 675962189220.

It is an arithmetic number, because the mean of its divisors is an integer number (675962189220).

Almost surely, 2^{1351924378439} is an apocalyptic number.

1351924378439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351924378439 is an equidigital number, since it uses as much as digits as its factorization.

1351924378439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19595520, while the sum is 59.

The spelling of 1351924378439 in words is "one trillion, three hundred fifty-one billion, nine hundred twenty-four million, three hundred seventy-eight thousand, four hundred thirty-nine".