2930530907681 has 16 divisors (see below), whose sum is σ = 3180971514000. Its totient is φ = 2683707717888.

The previous prime is 2930530907669. The next prime is 2930530907687. The reversal of 2930530907681 is 1867090350392.

It can be written as a sum of positive squares in 8 ways, for example, as 147609640000 + 2782921267681 = 384200^2 + 1668209^2 .

It is a cyclic number.

It is not a de Polignac number, because 2930530907681 - 2⁶ = 2930530907617 is a prime.

It is a super-2 number, since 2×2930530907681² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2930530907687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 693275 + ... + 2518271.

It is an arithmetic number, because the mean of its divisors is an integer number (198810719625).

Almost surely, 2^{2930530907681} is an apocalyptic number.

It is an amenable number.

2930530907681 is a deficient number, since it is larger than the sum of its proper divisors (250440606319).

2930530907681 is a wasteful number, since it uses less digits than its factorization.

2930530907681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825988.

The product of its (nonzero) digits is 2449440, while the sum is 53.

The spelling of 2930530907681 in words is "two trillion, nine hundred thirty billion, five hundred thirty million, nine hundred seven thousand, six hundred eighty-one".