3545872081 has 2 divisors, whose sum is σ = 3545872082. Its totient is φ = 3545872080.

The previous prime is 3545872049. The next prime is 3545872157. The reversal of 3545872081 is 1802785453.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3333907600 + 211964481 = 57740^2 + 14559^2 .

It is a cyclic number.

It is not a de Polignac number, because 3545872081 - 2⁵ = 3545872049 is a prime.

It is a super-3 number, since 3×3545872081³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (3545872181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1772936040 + 1772936041.

It is an arithmetic number, because the mean of its divisors is an integer number (1772936041).

Almost surely, 2^3545872081 is an apocalyptic number.

It is an amenable number.

3545872081 is a deficient number, since it is larger than the sum of its proper divisors (1).

3545872081 is an equidigital number, since it uses as much as digits as its factorization.

3545872081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 3545872081 is about 59547.2256364644. The cubic root of 3545872081 is about 1524.8987955413.

The spelling of 3545872081 in words is "three billion, five hundred forty-five million, eight hundred seventy-two thousand, eighty-one".