1319542793 has 2 divisors, whose sum is σ = 1319542794. Its totient is φ = 1319542792.

The previous prime is 1319542781. The next prime is 1319542801. The reversal of 1319542793 is 3972459131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1122786064 + 196756729 = 33508^2 + 14027^2 .

It is an emirp because it is prime and its reverse (3972459131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1319542793 - 2¹² = 1319538697 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1319542753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659771396 + 659771397.

It is an arithmetic number, because the mean of its divisors is an integer number (659771397).

Almost surely, 2^1319542793 is an apocalyptic number.

It is an amenable number.

1319542793 is a deficient number, since it is larger than the sum of its proper divisors (1).

1319542793 is an equidigital number, since it uses as much as digits as its factorization.

1319542793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 44.

The square root of 1319542793 is about 36325.5115999761. The cubic root of 1319542793 is about 1096.8346447525.

The spelling of 1319542793 in words is "one billion, three hundred nineteen million, five hundred forty-two thousand, seven hundred ninety-three".