1319946697 has 2 divisors, whose sum is σ = 1319946698. Its totient is φ = 1319946696.

The previous prime is 1319946673. The next prime is 1319946713. The reversal of 1319946697 is 7966499131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 691742601 + 628204096 = 26301^2 + 25064^2 .

It is a cyclic number.

It is not a de Polignac number, because 1319946697 - 2¹⁵ = 1319913929 is a prime.

It is not a weakly prime, because it can be changed into another prime (1319946097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659973348 + 659973349.

It is an arithmetic number, because the mean of its divisors is an integer number (659973349).

Almost surely, 2^1319946697 is an apocalyptic number.

It is an amenable number.

1319946697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1319946697 is an equidigital number, since it uses as much as digits as its factorization.

1319946697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2204496, while the sum is 55.

The square root of 1319946697 is about 36331.0706833696. The cubic root of 1319946697 is about 1096.9465448007.

The spelling of 1319946697 in words is "one billion, three hundred nineteen million, nine hundred forty-six thousand, six hundred ninety-seven".