1370309989 has 2 divisors, whose sum is σ = 1370309990. Its totient is φ = 1370309988.

The previous prime is 1370309951. The next prime is 1370310013. The reversal of 1370309989 is 9899030731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1227100900 + 143209089 = 35030^2 + 11967^2 .

It is a cyclic number.

It is not a de Polignac number, because 1370309989 - 2⁷ = 1370309861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1370304989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685154994 + 685154995.

It is an arithmetic number, because the mean of its divisors is an integer number (685154995).

Almost surely, 2^1370309989 is an apocalyptic number.

It is an amenable number.

1370309989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1370309989 is an equidigital number, since it uses as much as digits as its factorization.

1370309989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 367416, while the sum is 49.

The square root of 1370309989 is about 37017.6983212085. The cubic root of 1370309989 is about 1110.7243031280.

The spelling of 1370309989 in words is "one billion, three hundred seventy million, three hundred nine thousand, nine hundred eighty-nine".