1361374009 has 2 divisors, whose sum is σ = 1361374010. Its totient is φ = 1361374008.

The previous prime is 1361373989. The next prime is 1361374061. The reversal of 1361374009 is 9004731631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 871725625 + 489648384 = 29525^2 + 22128^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361374009 - 2²¹ = 1359276857 is a prime.

It is not a weakly prime, because it can be changed into another prime (1361374309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680687004 + 680687005.

It is an arithmetic number, because the mean of its divisors is an integer number (680687005).

Almost surely, 2^1361374009 is an apocalyptic number.

It is an amenable number.

1361374009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361374009 is an equidigital number, since it uses as much as digits as its factorization.

1361374009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 1361374009 is about 36896.8021514060. The cubic root of 1361374009 is about 1108.3046404894.

The spelling of 1361374009 in words is "one billion, three hundred sixty-one million, three hundred seventy-four thousand, nine".