1365009973 has 2 divisors, whose sum is σ = 1365009974. Its totient is φ = 1365009972.

The previous prime is 1365009937. The next prime is 1365010001. The reversal of 1365009973 is 3799005631.

It is a happy number.

Together with previous prime (1365009937) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1314642564 + 50367409 = 36258^2 + 7097^2 .

It is a cyclic number.

It is not a de Polignac number, because 1365009973 - 2¹⁷ = 1364878901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1365009473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 682504986 + 682504987.

It is an arithmetic number, because the mean of its divisors is an integer number (682504987).

Almost surely, 2^1365009973 is an apocalyptic number.

It is an amenable number.

1365009973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1365009973 is an equidigital number, since it uses as much as digits as its factorization.

1365009973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153090, while the sum is 43.

The square root of 1365009973 is about 36946.0413711672. The cubic root of 1365009973 is about 1109.2904517598.

The spelling of 1365009973 in words is "one billion, three hundred sixty-five million, nine thousand, nine hundred seventy-three".