1364889469 has 2 divisors, whose sum is σ = 1364889470. Its totient is φ = 1364889468.

The previous prime is 1364889451. The next prime is 1364889509. The reversal of 1364889469 is 9649884631.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 686964100 + 677925369 = 26210^2 + 26037^2 .

It is a cyclic number.

It is not a de Polignac number, because 1364889469 - 2⁷ = 1364889341 is a prime.

It is a super-2 number, since 2×1364889469² = 3725846525174203922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1364889419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 682444734 + 682444735.

It is an arithmetic number, because the mean of its divisors is an integer number (682444735).

Almost surely, 2^1364889469 is an apocalyptic number.

It is an amenable number.

1364889469 is a deficient number, since it is larger than the sum of its proper divisors (1).

1364889469 is an equidigital number, since it uses as much as digits as its factorization.

1364889469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8957952, while the sum is 58.

The square root of 1364889469 is about 36944.4105244623. The cubic root of 1364889469 is about 1109.2578078297.

The spelling of 1364889469 in words is "one billion, three hundred sixty-four million, eight hundred eighty-nine thousand, four hundred sixty-nine".