1381466593 has 8 divisors (see below), whose sum is σ = 1492001000. Its totient is φ = 1271541888.

The previous prime is 1381466543. The next prime is 1381466623. The reversal of 1381466593 is 3956641831.

It can be written as a sum of positive squares in 4 ways, for example, as 5650129 + 1375816464 = 2377^2 + 37092^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1381466593 - 2⁹ = 1381466081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1381466543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147708 + ... + 156781.

It is an arithmetic number, because the mean of its divisors is an integer number (186500125).

Almost surely, 2^1381466593 is an apocalyptic number.

1381466593 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1381466593 is a deficient number, since it is larger than the sum of its proper divisors (110534407).

1381466593 is a wasteful number, since it uses less digits than its factorization.

1381466593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304851.

The product of its digits is 466560, while the sum is 46.

The square root of 1381466593 is about 37168.0856784419. The cubic root of 1381466593 is about 1113.7305407277.

The spelling of 1381466593 in words is "one billion, three hundred eighty-one million, four hundred sixty-six thousand, five hundred ninety-three".