1319941697 has 2 divisors, whose sum is σ = 1319941698. Its totient is φ = 1319941696.

The previous prime is 1319941691. The next prime is 1319941747. The reversal of 1319941697 is 7961499131.

It is a happy number.

It is an a-pointer prime, because the next prime (1319941747) can be obtained adding 1319941697 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1131044161 + 188897536 = 33631^2 + 13744^2 .

It is a cyclic number.

It is not a de Polignac number, because 1319941697 - 2¹⁶ = 1319876161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1319941691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659970848 + 659970849.

It is an arithmetic number, because the mean of its divisors is an integer number (659970849).

Almost surely, 2^1319941697 is an apocalyptic number.

It is an amenable number.

1319941697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1319941697 is an equidigital number, since it uses as much as digits as its factorization.

1319941697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 367416, while the sum is 50.

The square root of 1319941697 is about 36331.0018716798. The cubic root of 1319941697 is about 1096.9451597095.

The spelling of 1319941697 in words is "one billion, three hundred nineteen million, nine hundred forty-one thousand, six hundred ninety-seven".