1237490605609 has 2 divisors, whose sum is σ = 1237490605610. Its totient is φ = 1237490605608.

The previous prime is 1237490605567. The next prime is 1237490605649. The reversal of 1237490605609 is 9065060947321.

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., 1209659024025 + 27831581584 = 1099845^2 + 166828^2 .

It is a cyclic number.

It is not a de Polignac number, because 1237490605609 - 2¹³ = 1237490597417 is a prime.

It is not a weakly prime, because it can be changed into another prime (1237490605649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 618745302804 + 618745302805.

It is an arithmetic number, because the mean of its divisors is an integer number (618745302805).

Almost surely, 2^{1237490605609} is an apocalyptic number.

It is an amenable number.

1237490605609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1237490605609 is an equidigital number, since it uses as much as digits as its factorization.

1237490605609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 52.

The spelling of 1237490605609 in words is "one trillion, two hundred thirty-seven billion, four hundred ninety million, six hundred five thousand, six hundred nine".