3545130681 has 27 divisors (see below), whose sum is σ = 5202255279. Its totient is φ = 2326385952.

The previous prime is 3545130679. The next prime is 3545130709. The reversal of 3545130681 is 1860315453.

The square root of 3545130681 is 59541.

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

3545130681 is a `hidden beast` number, since 3 + 545 + 1 + 30 + 6 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 680740281 + 2864390400 = 26091^2 + 53520^2 .

It is not a de Polignac number, because 3545130681 - 2¹ = 3545130679 is a prime.

It is a super-2 number, since 2×3545130681² = 25135903090735047522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3545130601) 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, 15897336 + ... + 15897558.

Almost surely, 2^3545130681 is an apocalyptic number.

3545130681 is the 59541-st square number.

3545130681 is the 29771-st centered octagonal number.

It is an amenable number.

3545130681 is a deficient number, since it is larger than the sum of its proper divisors (1657124598).

3545130681 is an frugal number, since it uses more digits than its factorization.

3545130681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The cubic root of 3545130681 is about 1524.7925086866.

Multiplying 3545130681 by its sum of digits (36), we get a square (127624704516 = 357246²).

The spelling of 3545130681 in words is "three billion, five hundred forty-five million, one hundred thirty thousand, six hundred eighty-one".