3520973081 has 2 divisors, whose sum is σ = 3520973082. Its totient is φ = 3520973080.

The previous prime is 3520973069. The next prime is 3520973117. The reversal of 3520973081 is 1803790253.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2841849481 + 679123600 = 53309^2 + 26060^2 .

It is a cyclic number.

It is not a de Polignac number, because 3520973081 - 2⁶ = 3520973017 is a prime.

It is a super-2 number, since 2×3520973081² = 24794502874253265122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3520973381) 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 as a sum of consecutive naturals, namely, 1760486540 + 1760486541.

It is an arithmetic number, because the mean of its divisors is an integer number (1760486541).

Almost surely, 2^3520973081 is an apocalyptic number.

It is an amenable number.

3520973081 is a deficient number, since it is larger than the sum of its proper divisors (1).

3520973081 is an equidigital number, since it uses as much as digits as its factorization.

3520973081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 3520973081 is about 59337.7879685450. The cubic root of 3520973081 is about 1521.3211449044.

The spelling of 3520973081 in words is "three billion, five hundred twenty million, nine hundred seventy-three thousand, eighty-one".