1381807303009 has 27 divisors (see below), whose sum is σ = 1615614990993. Its totient is φ = 1178390035368.

The previous prime is 1381807303007. The next prime is 1381807303057. The reversal of 1381807303009 is 9003037081831.

The square root of 1381807303009 is 1175503.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1381807303009 - 2¹ = 1381807303007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1381807303007) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2526155674 + ... + 2526156220.

It is an arithmetic number, because the mean of its divisors is an integer number (59837592259).

Almost surely, 2^{1381807303009} is an apocalyptic number.

1381807303009 is the 1175503-rd square number.

1381807303009 is the 587752-nd centered octagonal number.

It is an amenable number.

1381807303009 is a deficient number, since it is larger than the sum of its proper divisors (233807687984).

1381807303009 is an frugal number, since it uses more digits than its factorization.

1381807303009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722 (or 861 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 1381807303009 in words is "one trillion, three hundred eighty-one billion, eight hundred seven million, three hundred three thousand, nine".