1396319921943 has 16 divisors (see below), whose sum is σ = 1883571148800. Its totient is φ = 919984239680.

The previous prime is 1396319921897. The next prime is 1396319921947. The reversal of 1396319921943 is 3491299136931.

It is a cyclic number.

It is not a de Polignac number, because 1396319921943 - 2²⁴ = 1396303144727 is a prime.

It is a super-2 number, since 2×1396319921943² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396319921947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 675033 + ... + 1802306.

It is an arithmetic number, because the mean of its divisors is an integer number (117723196800).

Almost surely, 2^{1396319921943} is an apocalyptic number.

1396319921943 is a deficient number, since it is larger than the sum of its proper divisors (487251226857).

1396319921943 is a wasteful number, since it uses less digits than its factorization.

1396319921943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2479542.

The product of its digits is 8503056, while the sum is 60.

The spelling of 1396319921943 in words is "one trillion, three hundred ninety-six billion, three hundred nineteen million, nine hundred twenty-one thousand, nine hundred forty-three".