1370185489 has 2 divisors, whose sum is σ = 1370185490. Its totient is φ = 1370185488.

The previous prime is 1370185483. The next prime is 1370185529. The reversal of 1370185489 is 9845810731.

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., 1030410000 + 339775489 = 32100^2 + 18433^2 .

It is an emirp because it is prime and its reverse (9845810731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1370185489 - 2⁵ = 1370185457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1370185483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685092744 + 685092745.

It is an arithmetic number, because the mean of its divisors is an integer number (685092745).

Almost surely, 2^1370185489 is an apocalyptic number.

It is an amenable number.

1370185489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1370185489 is an equidigital number, since it uses as much as digits as its factorization.

1370185489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 46.

The square root of 1370185489 is about 37016.0166549563. The cubic root of 1370185489 is about 1110.6906636924.

The spelling of 1370185489 in words is "one billion, three hundred seventy million, one hundred eighty-five thousand, four hundred eighty-nine".