1393916193931 has 2 divisors, whose sum is σ = 1393916193932. Its totient is φ = 1393916193930.

The previous prime is 1393916193889. The next prime is 1393916193997.

1393916193931 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 1393916193931 - 2²⁹ = 1393379323019 is a prime.

It is a super-2 number, since 2×1393916193931² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1393916193431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696958096965 + 696958096966.

It is an arithmetic number, because the mean of its divisors is an integer number (696958096966).

Almost surely, 2^{1393916193931} is an apocalyptic number.

1393916193931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1393916193931 is an equidigital number, since it uses as much as digits as its factorization.

1393916193931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3188646, while the sum is 58.

The spelling of 1393916193931 in words is "one trillion, three hundred ninety-three billion, nine hundred sixteen million, one hundred ninety-three thousand, nine hundred thirty-one".