1381569017 has 2 divisors, whose sum is σ = 1381569018. Its totient is φ = 1381569016.

The previous prime is 1381568977. The next prime is 1381569023. The reversal of 1381569017 is 7109651831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 962302441 + 419266576 = 31021^2 + 20476^2 .

It is a cyclic number.

It is not a de Polignac number, because 1381569017 - 2¹⁶ = 1381503481 is a prime.

It is not a weakly prime, because it can be changed into another prime (1381569047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690784508 + 690784509.

It is an arithmetic number, because the mean of its divisors is an integer number (690784509).

Almost surely, 2^1381569017 is an apocalyptic number.

It is an amenable number.

1381569017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381569017 is an equidigital number, since it uses as much as digits as its factorization.

1381569017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 1381569017 is about 37169.4635016434. The cubic root of 1381569017 is about 1113.7580645970.

The spelling of 1381569017 in words is "one billion, three hundred eighty-one million, five hundred sixty-nine thousand, seventeen".