1358830844721 has 45 divisors (see below), whose sum is σ = 2361391501161. Its totient is φ = 776432803608.

The previous prime is 1358830844713. The next prime is 1358830844731. The reversal of 1358830844721 is 1274480388531.

The square root of 1358830844721 is 1165689.

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

1358830844721 is a `hidden beast` number, since 1 + 3 + 588 + 30 + 8 + 4 + 4 + 7 + 21 = 666.

It is not a de Polignac number, because 1358830844721 - 2³ = 1358830844713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1358830844731) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 73429156 + ... + 73447658.

Almost surely, 2^{1358830844721} is an apocalyptic number.

1358830844721 is the 1165689-th square number.

1358830844721 is the 582845-th centered octagonal number.

It is an amenable number.

1358830844721 is a deficient number, since it is larger than the sum of its proper divisors (1002560656440).

1358830844721 is an frugal number, since it uses more digits than its factorization.

1358830844721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37032 (or 18513 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The spelling of 1358830844721 in words is "one trillion, three hundred fifty-eight billion, eight hundred thirty million, eight hundred forty-four thousand, seven hundred twenty-one".