1393389255091 has 2 divisors, whose sum is σ = 1393389255092. Its totient is φ = 1393389255090.

The previous prime is 1393389255073. The next prime is 1393389255131. The reversal of 1393389255091 is 1905529833931.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1393389255091 is a prime.

It is not a weakly prime, because it can be changed into another prime (1393389255491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696694627545 + 696694627546.

It is an arithmetic number, because the mean of its divisors is an integer number (696694627546).

Almost surely, 2^{1393389255091} is an apocalyptic number.

1393389255091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1393389255091 is an equidigital number, since it uses as much as digits as its factorization.

1393389255091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7873200, while the sum is 58.

The spelling of 1393389255091 in words is "one trillion, three hundred ninety-three billion, three hundred eighty-nine million, two hundred fifty-five thousand, ninety-one".